diff --git a/share/goodie/calculator/calculator.css b/share/goodie/calculator/calculator.css
index 3648dd9e6..8584b8b2e 100644
--- a/share/goodie/calculator/calculator.css
+++ b/share/goodie/calculator/calculator.css
@@ -1,49 +1,70 @@
 /* Typography */
+
 .zci--calculator,
 .zci--calculator .tile__ctrl__btn,
 .zci--calculator .tile__ctrl__toggle,
 .zci--calculator .tile__skip-calc {
-    font-family: "DDG_ProximaNova","DDG_ProximaNova_UI_0","DDG_ProximaNova_UI_1","DDG_ProximaNova_UI_2","DDG_ProximaNova_UI_3","DDG_ProximaNova_UI_4","DDG_ProximaNova_UI_5","DDG_ProximaNova_UI_6","Proxima Nova","Helvetica Neue","Helvetica","Segoe UI","Nimbus Sans L","Liberation Sans","Open Sans",FreeSans,Arial,sans-serif;
+    font-family: "DDG_ProximaNova", "DDG_ProximaNova_UI_0", "DDG_ProximaNova_UI_1", "DDG_ProximaNova_UI_2", "DDG_ProximaNova_UI_3", "DDG_ProximaNova_UI_4", "DDG_ProximaNova_UI_5", "DDG_ProximaNova_UI_6", "Proxima Nova", "Helvetica Neue", "Helvetica", "Segoe UI", "Nimbus Sans L", "Liberation Sans", "Open Sans", FreeSans, Arial, sans-serif;
 }
 
+
 /* Show UI when CSS is loaded */
-.tile--calculator {
+
+.zci--calculator .tile--calculator {
     display: block !important;
 }
 
+
 /* Layout */
-.tile__calc {
+
+.zci--calculator .zci__body {
+    padding-left: 0px;
+}
+
+.zci--calculator .tile__calc {
     height: 352px;
 }
 
-.tile__calc__col {
+.zci--calculator .tile__calc__col {
     height: 251px;
     width: 35%;
+    max-width: 295px; /* half width of search box */
     float: left;
     display: inline-block;
-    border-right: 1px solid #c8c8c8;
     border-bottom: 1px solid #c8c8c8;
     box-sizing: border-box;
 }
 
+
 /* Tabs */
-.tile__calc .tile__tabs {
+
+.zci--calculator .tile__calc .tile__tabs {
     box-sizing: border-box;
+    -webkit-touch-callout: none;
+    -webkit-user-select: none;
+    -khtml-user-select: none;
+    -moz-user-select: none;
+    -ms-user-select: none;
+    user-select: none;
 }
 
+
 /* Controllers */
-.tile__calc .tile__ctrl__btn,
-.tile__calc .tile__ctrl__toggle {
+
+.zci--calculator .tile__calc .tile__ctrl__btn,
+.zci--calculator .tile__calc .tile__ctrl__toggle {
     float: left;
     position: relative;
     box-sizing: border-box;
     height: 50px;
 }
 
+
 /* Toggle */
-.tile__calc .tile__ctrl__toggle {
+
+.zci--calculator .tile__calc .tile__ctrl__toggle {
     width: 50%;
-    padding: 15px 0;;
+    padding: 15px 0;
     margin: 0;
     background: #ebebeb;
     border: 1px solid #c8c8c8;
@@ -54,69 +75,68 @@
     text-align: center;
 }
 
+
 /* The switch - the box around the slider */
-.tile__ctrl__toggle-indicator {
-  position: relative;
-  display: inline-block;
-  width: 38px;
-  height: 14px;
+
+.zci--calculator .tile__ctrl__toggle-indicator {
+    position: relative;
+    display: inline-block;
+    width: 38px;
+    height: 14px;
 }
 
-.tile__ctrl__toggle-indicator input {display:none;}
-
-.tile__ctrl__toggle-slider {
-  position: absolute;
-  cursor: pointer;
-  top: 0;
-  left: 0;
-  right: 0;
-  bottom: 0;
-  background-color: #ccc;
-  -webkit-transition: .4s;
-  transition: .4s;
+.zci--calculator .tile__ctrl__toggle-indicator input {
+    display: none;
 }
 
-.tile__ctrl__toggle-slider:before {
-  position: absolute;
-  content: "";
-  height: 15px;
-  width: 15px;
-  left: 1px;
-  bottom: 0px;
-  background-color: white;
-  -webkit-transition: .4s;
-  transition: .4s;
+.zci--calculator .tile__ctrl__toggle-slider {
+    position: absolute;
+    cursor: pointer;
+    top: 0;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    background-color: #ccc;
+    -webkit-transition: .4s;
+    transition: .4s;
 }
 
-/*
-input:checked + .tile__ctrl__toggle-slider {
-  background-color: #2196F3;
-}
-*/
-
-input:focus + .tile__ctrl__toggle-slider {
-  box-shadow: 0 0 1px #2196F3;
+.zci--calculator .tile__ctrl__toggle-slider:before {
+    position: absolute;
+    content: "";
+    height: 15px;
+    width: 15px;
+    left: 1px;
+    bottom: 0px;
+    background-color: white;
+    -webkit-transition: .4s;
+    transition: .4s;
 }
 
-input:checked + .tile__ctrl__toggle-slider:before {
-  -webkit-transform: translateX(23px);
-  -ms-transform: translateX(23px);
-  transform: translateX(23px);
+input:focus+.tile__ctrl__toggle-slider {
+    box-shadow: 0 0 1px #2196F3;
 }
 
-.tile__ctrl__toggle-slider.tile__ctrl__round-icon {
-  border-radius: 34px;
-  margin: 3px 0;
-  padding: 7px 0;
+input:checked+.tile__ctrl__toggle-slider:before {
+    -webkit-transform: translateX(23px);
+    -ms-transform: translateX(23px);
+    transform: translateX(23px);
 }
 
-.tile__ctrl__toggle-slider.tile__ctrl__round-icon:before {
-  border-radius: 50%;
+.zci--calculator .tile__ctrl__toggle-slider.tile__ctrl__round-icon {
+    border-radius: 34px;
+    margin: 3px 0;
+    padding: 7px 0;
+}
+
+.zci--calculator .tile__ctrl__toggle-slider.tile__ctrl__round-icon:before {
+    border-radius: 50%;
 }
 
 
 /* Buttons */
-.tile__calc .tile__ctrl__btn {
+
+.zci--calculator .tile__calc .tile__ctrl__btn {
     width: 25%;
     padding: 0;
     margin: 0;
@@ -129,49 +149,46 @@ input:checked + .tile__ctrl__toggle-slider:before {
     font-size: 1.6em;
 }
 
-.tile__calc .tile__ctrl--double {
+.zci--calculator .tile__calc .tile__ctrl--double {
     width: 50%;
 }
 
-.tile__calc .tile__ctrl--ops,
-.tile__calc .tile__tab__sci .tile__ctrl__btn {
+.zci--calculator .tile__calc .tile__ctrl--ops,
+.zci--calculator .tile__calc .tile__tab__sci .tile__ctrl__btn {
     background: #ebebeb;
     font-weight: lighter;
 }
 
-.tile__calc .tile__ctrl--important {
+.zci--calculator .tile__calc .tile__ctrl--important {
     background: #ffd90b;
-    font-family: "DDG_ProximaNova_UI_0","DDG_ProximaNova_UI_1","DDG_ProximaNova_UI_2","DDG_ProximaNova_UI_3","DDG_ProximaNova_UI_4","DDG_ProximaNova_UI_5","DDG_ProximaNova_UI_6","Proxima Nova","Helvetica Neue","Helvetica","Segoe UI","Nimbus Sans L","Liberation Sans","Open Sans",FreeSans,Arial,sans-serif;
+    font-family: "DDG_ProximaNova_UI_0", "DDG_ProximaNova_UI_1", "DDG_ProximaNova_UI_2", "DDG_ProximaNova_UI_3", "DDG_ProximaNova_UI_4", "DDG_ProximaNova_UI_5", "DDG_ProximaNova_UI_6", "Proxima Nova", "Helvetica Neue", "Helvetica", "Segoe UI", "Nimbus Sans L", "Liberation Sans", "Open Sans", FreeSans, Arial, sans-serif;
     font-weight: lighter;
     font-size: 2em;
     padding-bottom: 0.1em;
 }
 
+
 /* Ctrl (Button, Toggle) */
-.tile__calc .tile__ctrl__btn,
-.tile__calc .tile__ctrl__toggle {
+
+.zci--calculator .tile__calc .tile__ctrl__btn,
+.zci--calculator .tile__calc .tile__ctrl__toggle {
     cursor: pointer;
 }
 
-.tile__calc .tile__ctrl__btn:focus,
-.tile__calc .tile__ctrl__toggle:focus,
-.tile__calc .tile__ctrl__btn:active,
-.tile__calc .tile__ctrl__toggle:active {
+.zci--calculator .tile__calc .tile__ctrl__btn:focus,
+.zci--calculator .tile__calc .tile__ctrl__toggle:focus,
+.zci--calculator .tile__calc .tile__ctrl__btn:active,
+.zci--calculator .tile__calc .tile__ctrl__toggle:active {
     outline: 0;
 }
 
-.tile__calc .tile__ctrl__btn:focus,
-.tile__calc .tile__ctrl__toggle:focus {
-    /*box-shadow: inset 0px 0px 5px #a5bdcb; /* TOREVISIT */*/
-}
-
 .no-touch .tile__calc .tile__ctrl__btn:hover,
 .no-touch .tile__calc .tile__ctrl__toggle:hover {
     background-color: #dadada;
 }
 
-.tile__calc .tile__ctrl__btn:active,
-.tile__calc .tile__ctrl__toggle:active {
+.zci--calculator .tile__calc .tile__ctrl__btn:active,
+.zci--calculator .tile__calc .tile__ctrl__toggle:active {
     background-color: #cacaca;
 }
 
@@ -179,12 +196,14 @@ input:checked + .tile__ctrl__toggle-slider:before {
     background-color: #ddc750;
 }
 
-.tile__calc .tile__ctrl--important:active {
+.zci--calculator .tile__calc .tile__ctrl--important:active {
     background-color: #c8a900;
 }
 
+
 /* Accessibility skip handle */
-.tile__calc .tile__skip-calc {
+
+.zci--calculator .tile__calc .tile__skip-calc {
     position: absolute;
     opacity: 0;
     pointer-events: none;
@@ -195,14 +214,17 @@ input:checked + .tile__ctrl__toggle-slider:before {
     font-size: 1em;
     margin: 1px;
 }
-.tile__calc .tile__skip-calc:focus {
+
+.zci--calculator .tile__calc .tile__skip-calc:focus {
     pointer-events: all;
     opacity: 1;
     z-index: 1;
 }
 
+
 /* Input trap */
-.tile__calc .tile__input-trap {
+
+.zci--calculator .tile__calc .tile__input-trap {
     position: absolute;
     opacity: 0;
     pointer-events: none;
@@ -211,42 +233,54 @@ input:checked + .tile__ctrl__toggle-slider:before {
     z-index: -9999;
 }
 
+
 /* Display */
-.tile__calc .tile__display {
+
+.zci--calculator .tile__calc .tile__display {
     background: #fff;
     border: 1px solid #c8c8c8;
     border-bottom: 0;
     padding: 0.8em;
     box-sizing: border-box;
     width: 70%;
+    max-width: 590px; /* Match width of search box */
     border-right: 0;
     height: 100px;
     position: relative;
     box-shadow: inset -1px -1px 0px #fff, inset 1px 1px 0px #fff;
     transition: box-shadow 0.3s;
+    /* Text overflow */
+    text-align: right;
+    overflow: hidden;
+    white-space: nowrap;
 }
 
-.tile__calc .tile__input-trap:focus + .tile__display,
-.tile__calc .tile__display:focus {
+.zci--calculator .tile__calc .tile__input-trap:focus+.tile__display,
+.zci--calculator .tile__calc .tile__display:focus {
     box-shadow: inset -1px -1px 0px #61a0c7, inset 1px 1px 0px #61a0c7;
 }
 
-.tile__calc .tile__display__main,
-.tile__calc .tile__display__aside {
-    text-align: right;
+.zci--calculator .tile__calc .tile__display__aside--wrap {
+    position: relative;
+    overflow: hidden;
+    height: 1.3em;
+}
+
+.zci--calculator .tile__calc .tile__display__main,
+.zci--calculator .tile__calc .tile__display__aside {
     display: block;
 }
 
-.tile__calc .tile__display__aside {
+.zci--calculator .tile__calc .tile__display__aside {
     font-size: 1.1em;
     letter-spacing: 0.025em;
     color: #909090;
     font-weight: lighter;
-    margin-top: -0.2em;
-    height: 1em;
+    position: absolute;
+    right: 0;
 }
 
-.tile__calc .tile__display__main {
+.zci--calculator .tile__calc .tile__display__main {
     color: #101010;
     font-weight: lighter;
     font-size: 2.5em;
@@ -257,53 +291,36 @@ input:checked + .tile__ctrl__toggle-slider:before {
     overflow: hidden;
     white-space: nowrap;
     outline: 0;
+    float: right;
 }
 
-/* Display EG */
-.tile__calc .tile__display__main .tile__calc__eg {
-    box-sizing: border-box;
-    position: absolute;
-    left: 0;
-    top: 50%;
-    display: block;
-    height: 2px;
-    width: 2px;
-    overflow: hidden;
-    padding: 0;
-    background: #ffe1e1;
-    color: #fff;
-    font-weight: bold;
-    font-size: 0.3em;
-    letter-spacing: initial;
-    transition: 0.5s all 0.2s;
-}
-.tile__calc .tile__display__main:hover .tile__calc__eg {
-    transition-delay: 3.14s;
-    height: 1.6em;
-    width: 7em;
-    top: 0;
-    padding: 0.2em 0.3em;
-    background: #f07e7e;
-    text-align: center;
+.zci--calculator .tile__calc .tile__display__main .pseudoBrace {
+    color: #d3d3d3;
 }
 
 /* Formula presentation: Big */
-.tile__calc .tile__display__main sup {
+
+.zci--calculator .tile__calc .tile__display__main sup {
     top: -0.8em;
     left: 0.1em;
     padding-right: 0.2em;
 }
-.tile__calc .tile__display__main .formula__placeholder {
+
+.zci--calculator .tile__calc .tile__display__main .formula__placeholder {
     color: #909090;
 }
 
+
 /* Formula presentation: Small */
-.tile__calc .tile__display__aside sup {
+
+.zci--calculator .tile__calc .tile__display__aside sup {
     top: -0.8em;
 }
 
+
 /* Calc display options */
-.tile__calc .tile__options {
+
+.zci--calculator .tile__calc .tile__options {
     bottom: 0.4em;
     padding: 0 0.8em;
     width: 100%;
@@ -312,8 +329,15 @@ input:checked + .tile__ctrl__toggle-slider:before {
     position: absolute;
     display: table;
     box-sizing: border-box;
+    -webkit-touch-callout: none;
+    -webkit-user-select: none;
+    -khtml-user-select: none;
+    -moz-user-select: none;
+    -ms-user-select: none;
+    user-select: none;
 }
-.tile__calc .tile__option {
+
+.zci--calculator .tile__calc .tile__option {
     transition: width 0.5s;
     font-size: 0.8em;
     width: auto;
@@ -324,35 +348,43 @@ input:checked + .tile__ctrl__toggle-slider:before {
     font-weight: 200;
     letter-spacing: 0.03em;
 }
-    .tile__calc .tile__option span {
-        cursor: pointer;
-        padding: 0.2em 0.5em;
-        margin: -0.5em;
-    }
-.tile__calc .tile__option--active {
+
+.tile__calc .tile__option span {
+    cursor: pointer;
+    padding: 0.2em 0.5em;
+    margin: -0.5em;
+}
+
+.zci--calculator .tile__calc .tile__option--active {
     color: #54a3bb;
     font-weight: 400;
 }
-    .tile__calc .tile__option--active span {
-        cursor: default;
-    }
 
-.tile__calc .tile__option__sci {
+.tile__calc .tile__option--active span {
+    cursor: default;
+}
+
+.zci--calculator .tile__calc .tile__option__sci {
     text-align: left;
 }
-.tile__calc .tile__option__basic {
+
+.zci--calculator .tile__calc .tile__option__basic {
     text-align: right;
 }
-.tile__calc .tile__option__history {
+
+.zci--calculator .tile__calc .tile__option__history {
     display: none;
     text-align: right;
 }
-.tile__calc .tile__option:hover {
+
+.zci--calculator .tile__calc .tile__option:hover {
     text-decoration: none;
 }
 
+
 /* History tab */
-.tile__calc .tile__history {
+
+.zci--calculator .tile__calc .tile__history {
     width: 30%;
     background-color: #f9f9f9;
     position: relative;
@@ -366,12 +398,15 @@ input:checked + .tile__ctrl__toggle-slider:before {
     overflow-y: auto;
     transition: all 0.3s;
 }
-.tile__calc .tile__history--hidden {
+
+.zci--calculator .tile__calc .tile__history--hidden {
     width: 0px;
 }
 
+
 /* History item */
-.tile__calc .tile__past-calc {
+
+.zci--calculator .tile__calc .tile__past-calc {
     box-sizing: border-box;
     padding: 0.4em 0.6em 0.4em;
     height: 50px;
@@ -383,210 +418,213 @@ input:checked + .tile__ctrl__toggle-slider:before {
     overflow: hidden;
     transition: 0.5s all;
 }
-.tile__calc .tile__past-calc.tile__past-calc--hidden {
+
+.zci--calculator .tile__calc .tile__past-calc.tile__past-calc--hidden {
     height: 0px;
     padding-top: 0;
     padding-bottom: 0;
 }
 
+
 /******************/
 /* TEXT SIZE ADJS */
 /******************/
 
+
 /* Largest */
+
 .set-text--largest .tile__calc .tile__display__main {
     font-size: 2em;
     font-weight: 400;
 }
+
 .set-text--largest .tile__calc .tile__past-calc {
     padding: 0.2em 0.4em;
 }
+
 .set-text--largest .tile__calc .zci--calculator .zci__main--detail {
     max-width: 61.9em;
 }
+
 .set-text--largest .tile__calc .tile__past-result {
     margin-top: -0.2em;
 }
 
-.tile__calc .tile__past-calc:hover {
+.zci--calculator .tile__calc .tile__past-calc:hover {
     background: #eee;
 }
-.tile__calc .tile__past-formula {
+
+.zci--calculator .tile__calc .tile__past-formula {
     display: block;
     color: #aaa;
     font-weight: 100;
     font-size: 0.8em;
 }
-.tile__calc .tile__past-result {
+
+.zci--calculator .tile__calc .tile__past-result {
     font-weight: 700;
     color: #191919;
     font-size: 1.2em;
     display: inline-block;
 }
 
+
 /* Big Widescreens >= 1200px (Default) */
+
 .zci--calculator .zci__main {
     max-width: 60em;
 }
 
+
 /*****************/
 /* MEDIA QUERIES */
 /*****************/
 
-/* Monitors <= 1200 */
-@media only screen and (min-width: 75em) {
-    .zci--calculator .zci__main {
-        padding-left: 90px;
-    }
-}
-
 /* Monitors with MQs >= 960 */
+
 @media only screen and (min-width: 60em) {
-    .tile__calc .tile__options {
+    .zci--calculator .tile__calc .tile__options {
         bottom: -1em;
     }
 }
 
 
 /* Tablets <= 960 */
+
 @media only screen and (max-width: 60em) {
     /* show only one calc tab */
-    .tile__calc .tile__tabs {
+    .zci--calculator .tile__calc .tile__tabs {
         overflow: hidden;
     }
-    .tile__calc .tile__calc__col {
-        width: 310px;
+    .zci--calculator .tile__calc .tile__calc__col {
+        width: 295px;
     }
     /* default: basic tab */
-    .tile__calc .tile__tabs .tile__tab__sci /*:first-child*/ {
-        margin-left: -310px;
+    .zci--calculator .tile__calc .tile__tabs .tile__tab__sci {
+        margin-left: -295px;
     }
-    .tile__calc .tile__display {
-        /*max-width: 21.6em;*/
-        max-width: 310px;
+    .zci--calculator .tile__calc .tile__display {
+        max-width: 295px;
     }
     .zci--calculator .zci__main--detail {
         max-width: 43.8em;
     }
-    .tile__calc .tile__history {
+    .zci--calculator .tile__calc .tile__history {
+        max-width: 295px;
         transition: width 0.6s;
         position: absolute;
     }
-
-    /* show 3 tab options
-    .tile__calc .tile__display__main {
+    /* show 3 tab options */
+    .zci--calculator .tile__calc .tile__display__main {
         margin-top: -0.2em;
-    } */
-    .tile__calc .tile__display .tile__options {
-        /*margin-top: 0em;*/
     }
-    .tile__calc .tile__display .tile__option {
+    .zci--calculator .tile__calc .tile__display .tile__options {
+        margin-top: 0em;
+    }
+    .zci--calculator .tile__calc .tile__display .tile__option {
         float: left;
     }
-    .tile__calc .tile__display .tile__option__sci {
+    .zci--calculator .tile__calc .tile__display .tile__option__sci {
         text-align: left;
     }
-    .tile__calc .tile__display .tile__option__basic {
+    .zci--calculator .tile__calc .tile__display .tile__option__basic {
         text-align: right;
     }
 }
 
+
 /* Mobiles <= 740 */
-@media only screen and (max-width: 46.25em) {
-    .tile__calc .tile__history {
-        width: 260px;
+
+@media only screen and (max-width: 43.8em) {
+
+    .zci--calculator .tile__calc .tile__display {
+        width: 50%;
+    }
+
+    .zci--calculator .tile__calc .tile__calc__col {
+        width: 50%;
+    }
+
+    .zci--calculator .tile__calc .tile__history {
+        max-width: 260px;
     }
 }
 
+
 /* Custom <= 660 */
-/*@media only screen and (max-width: 42.8em) {*/
+
 @media only screen and (max-width: 37.4em) {
     .tile--calculator {
         width: 100%;
         box-sizing: border-box;
     }
-
-    .tile__calc {
+    .zci--calculator .tile__calc {
         overflow: hidden;
-        width: 310px;
+        width: 100%;
     }
-
-    .tile__calc .tile__display {
+    .zci--calculator .tile__calc .tile__display {
         width: 100%;
         max-width: none;
         border-right: 1px solid #d8d8d8;
     }
-
-    .tile__calc .tile__tabs {
-        width: 930px;
+    .zci--calculator .tile__calc .tile__tabs {
+        width: 300%;
         position: relative;
-        left: -310px; /* default: basic tab */
+        left: -100%;
+        /* default: basic tab */
         transition: left 0.7s;
-        -webkit-touch-callout: none;
-        -webkit-user-select: none;
-        -khtml-user-select: none;
-        -moz-user-select: none;
-        -ms-user-select: none;
-        user-select: none;
     }
-
-    .tile__calc .tile__tabs.tile__tabs--single-basic {
-        left: -310px;
+    .zci--calculator .tile__calc .tile__tabs.tile__tabs--single-basic {
+        left: -100%;
     }
-    .tile__calc .tile__tabs.tile__tabs--single-sci {
+    .zci--calculator .tile__calc .tile__tabs.tile__tabs--single-sci {
         left: 0;
     }
-    .tile__calc .tile__tabs.tile__tabs--single-history {
-        left: -620px;
+    .zci--calculator .tile__calc .tile__tabs.tile__tabs--single-history {
+        left: -200%;
     }
-
-    .tile__calc .tile__calc__col {
+    .zci--calculator .tile__calc .tile__calc__col {
+        width: 33.33%;
+        max-width: 33.33%;
         border-right: 1px solid #ccc;
     }
-
-    .tile__calc .tile__tabs .tile__tab__sci:first-child {
+    .zci--calculator .tile__calc .tile__tabs .tile__tab__sci:first-child {
         margin-left: 0;
     }
-
-    .tile__calc .tile__history {
+    .zci--calculator .tile__calc .tile__history {
         position: relative;
         margin-left: 0;
         margin-top: 0;
-        width: 310px;
+        width: 100%;
         height: 251px;
     }
-    
     /* 3 tab options */
-    /*
-    .tile__calc .tile__display .tile__option {
+    .zci--calculator .tile__calc .tile__display .tile__option {
         width: 33%;
     }
-    .tile__calc .tile__display .tile__option__basic {
+    .zci--calculator .tile__calc .tile__display .tile__option__basic {
         text-align: center;
     }
-    */
-    .tile__calc .tile__display .tile__option__history {
+    .zci--calculator .tile__calc .tile__display .tile__option__history {
         display: table-cell;
     }
-
     .is-mobile .zci--calculator .zci__body {
-        padding-right: 0px;
-        margin-left: -4px;
+        padding-left: 2px;
+        padding-right: 0;
     }
 }
 
 
 /* Custom >= 660  & Tablets <= 960 */
+
 @media only screen and (min-width: 37.4em) and (max-width: 60em) {
-    .tile__tabs.tile__tabs--single-sci .tile__tab__basic {
+    .zci--calculator .tile__tabs.tile__tabs--single-sci .tile__tab__basic {
         width: 0;
     }
-    .tile__tabs.tile__tabs--single-sci  .tile__tab__sci {
+    .zci--calculator .tile__tabs.tile__tabs--single-sci .tile__tab__sci {
         margin-left: 0;
     }
-    .tile__tabs.tile__tabs--single-basic .tile__tab__basic {
-
-    }
+    .zci--calculator .tile__tabs.tile__tabs--single-basic .tile__tab__basic {}
 }
 
 @media only screen and (max-width: 21em) {
@@ -597,27 +635,12 @@ input:checked + .tile__ctrl__toggle-slider:before {
     }
 }
 
+
 /* Small mobiles <= 310 */
+
 @media only screen and (max-width: 19.375em) {
-    .tile__calc .tile__history {
+    .zci--calculator .tile__calc .tile__history {
         position: relative;
         margin-top: 0;
     }
 }
-
-/* pete's hacks */
-
-/* allows the overflow */
-#calculatorscreen {
-  text-align:right;
-  overflow:hidden;
-  white-space: nowrap;
-}
-
-#display {
-  float:right;
-}
-
-.pseudoBrace {
-    color: #d3d3d3;
-}
diff --git a/share/goodie/calculator/calculator.js b/share/goodie/calculator/calculator.js
index b8efe3a79..d737f9f32 100644
--- a/share/goodie/calculator/calculator.js
+++ b/share/goodie/calculator/calculator.js
@@ -8,7 +8,8 @@ DDH.calculator = DDH.calculator || {};
     var FUNCTIONS = ["log(", "ln(", "tan(", "cos(", "sin("];
     var MISC_FUNCTIONS = ["EE"];
     var OPERANDS = ["+", "-", "×", "÷"];
-    
+    var POSTFIX = ["+", "-", "×", "÷", "%", "EE", "!", "<sup>2</sup>", "<sup>3</sup>", "<sup>□</sup>"]
+
     // global exponent constants
     var OPEN_SUP = "<sup>";
     var CLOSE_SUP = "</sup>";
@@ -17,7 +18,6 @@ DDH.calculator = DDH.calculator || {};
     // global variables
     var buttons, cButton;
     var evaluatedExpression;
-    var evalmath;
     var usingState, evaluated;
     var isExponential;
     var yRootState = false;
@@ -50,6 +50,7 @@ DDH.calculator = DDH.calculator || {};
         106: "×",
         107: "+",
         109: "-",
+        110: ".",
         111: "÷",
         187: "=",
         191: "÷",
@@ -94,11 +95,11 @@ DDH.calculator = DDH.calculator || {};
      * 7. tries to recover from user inputted faults (that make sense)
      */
     function normalizeExpression( expression ) {
+        var expression = expression
 
-        return expression
             // 1. handles +/- percentages
             .replace(/(\+) (\d+(\.\d{1,2})?)%/g, PercentageNormalizer.addPercentage)
-            .replace(/(\d+(\.\d{1,2})?) \- (\d+(\.\d{1,2})?)%/g, PercentageNormalizer.subtractPercentage)
+            .replace(/(\d+(\.\d{1,2})?) - (\d+(\.\d{1,2})?)%/g, PercentageNormalizer.subtractPercentage)
             .replace(/(\d+(\.\d{1,2})?)%/g, PercentageNormalizer.soloPercentage)
 
             // 2. handles basic arithmetic
@@ -117,16 +118,16 @@ DDH.calculator = DDH.calculator || {};
             .replace(/(EE) (\d+(\.\d{1,})?)/g, RewriteExpression.ee)
 
             // 5. handles scientific calculation functions
-            .replace(/\(?(\d+(\.\d{1,})?)\)?!/, RewriteExpression.factorial)
             .replace(/log\((\d+(\.\d{1,})?)\)/, RewriteExpression.log10)
             .replace(/ln\(/g, 'log(')
-            .replace(/(sin|cos|tan)\((\d+(\.\d+)?|πe)\)/g, RewriteExpression.trig)
+            .replace(/(sin|cos|tan)\((.+)\)/g, RewriteExpression.trig)
 
             // 6. handles constants
-            .replace(/π/g, ' pi ')
+            .replace(/π/g, '(pi)')
 
             // 7. last chance recovers
             .replace(/<sup>□<\/sup>/g, '')
+        return expression;
     }
 
     /**
@@ -191,6 +192,12 @@ DDH.calculator = DDH.calculator || {};
         // isNan("23") --> false, isNan("NaN") --> true
         isNan: function( total ) {
             return total === NaN || total === "NaN";
+        },
+
+        // checks if an input element is in the POSTFIX constant array
+        // isPostfix("!") --> true, isPostfix("dax") --> false
+        isPostfix: function( element ) {
+            return $.inArray(element, POSTFIX) >= 0;
         }
     }
 
@@ -210,13 +217,7 @@ DDH.calculator = DDH.calculator || {};
 
         // exponent: rewrites the exponent(s) in given expression
         exponent: function( _expression, number ) {
-            return "^" + number;
-        },
-
-        // factorial: rewrites a factorial expression to take a number (not BigNum)
-        // factorial("10.5!") --> `number("10.5")!`
-        factorial: function( _expression, number ) {
-            return "number(" + number + ")!";
+            return "^(" + number + ")";
         },
 
         // log10: rewrites log (base 10) function(s) in the expression
@@ -231,11 +232,12 @@ DDH.calculator = DDH.calculator || {};
 
         // trig: rewrites trig functions to handle the different outputs (RAD | DEG)
         trig: function( _expression, func, number ) {
+            var unit = ''
             if($('input#tile__ctrl__toggle-checkbox').is(':checked')) {
-                return "round(" + func + "(" + number + " deg), 11)";
-            } else {
-                return "round(" + func + "(" + number + "), 11)";
+                unit = ' deg';
             }
+            var wrappedNum = "(" + number + ")";
+            return "round(" + func + "(" + wrappedNum + unit + "), 11)";
         },
 
         // yRoot: rewrites yth root of x expressions
@@ -340,7 +342,7 @@ DDH.calculator = DDH.calculator || {};
      * bracket is instanciated, a pseudo closing place is put into the display.
      * There are cases where the user doesn't bother to close the bracket themselves.
      * This object also provides expression parsing to recover from such instances.
-     * 
+     *
      * TODO: Support parens in an exponential state
      */
     var ParenManager = {
@@ -449,42 +451,36 @@ DDH.calculator = DDH.calculator || {};
             ParenManager.reset();
         }
 
-        // a hack for the BigNumber factorial issue
-        // If the expression contains a number bigger than 1,000,000! then bail
-        if(/([1-9]\d{6,}).?!/.test(display.value)) {
-            display.value = "Infinity";
-        }
-
         isExponential = false;
 
         try {
-            var total = evalmath.eval(
+            var total = math.eval(
                 normalizeExpression(display.value)
             ).toString()
 
         } catch(err) {
-            // console.log(err);
             display.value = "Error";
             ExpressionParser.setExpression();
             setCButtonState("C");
             return false;
         }
 
-        if(Utils.isInfinite(total)) {
-            display.innerHTML = "Infinity";
-            display.value = "";
-            setCButtonState("C");
-            return false;
-        } else if(Utils.isNan(total)) {
+        if(Utils.isNan(total)) {
             display.value = "Error";
             setCButtonState("C");
             return false;
         }
 
-        ExpressionParser.setExpression(display.value);
-        Ledger.addToHistory(display.value, DDG.commifyNumber(total));
+        if(Utils.isInfinite(total)) {
+            ExpressionParser.setExpression(display.value);
+            Ledger.addToHistory(display.value, DDG.commifyNumber(total));
+            display.value = "Infinity";
+        } else {
+            ExpressionParser.setExpression(display.value);
+            Ledger.addToHistory(display.value, DDG.commifyNumber(total));
+            display.value = total;
+        }
 
-        display.value = total;
         evaluated = true;
         setCButtonState("C");
         yRootState = false;
@@ -492,16 +488,16 @@ DDH.calculator = DDH.calculator || {};
 
     /**
      * Clear
-     * 
+     *
      * This fat function handles backspacing through the `display.value`. `display.value`
      * is the *string* representation of the expression that is used throughout the calculator.
      * It needs to take into consideration the key / button pressed and the state of the
      * calculator.
-     * 
+     *
      * A calculator has a lot of edge cases, many of which are hard to account for in
      * advance. Many of these hueristics were developed through trail and error and
-     * logical deduction. 
-     * 
+     * logical deduction.
+     *
      * TODO: Refactor nested ifs. What is the best way to do this and handle edge cases?
      */
     function clear( element ) {
@@ -519,7 +515,7 @@ DDH.calculator = DDH.calculator || {};
             ExpressionParser.setExpression();
             setCButtonState("C");
             ParenManager.reset();
-            
+
         // CE clears one step at a time base on the state and the length of expression
         } else if(element === "CE" ) {
             ExpressionParser.setExpression();
@@ -528,32 +524,40 @@ DDH.calculator = DDH.calculator || {};
             if (ExpressionParser.getExpressionLength() > 1 && ( Utils.isMathFunction(display.value.substr(-4, 4)) || Utils.isMathFunction(display.value.substr(-3, 3)))) {
                 ExpressionParser.backspace(4);
                 ParenManager.decrementTotal();
-                
+
             // if last element is an open paren, backspace 1
             } else if(display.value.substr(-1, 1) === "(") {
                 ExpressionParser.backspace(1);
                 ParenManager.decrementTotal();
-                
+
+            // if there is an operand in the second last character in expression, backspace 3
+            } else if (ExpressionParser.getExpressionLength() > 1 && Utils.isOperand(display.value.substr(-2, 2)) ) {
+                ExpressionParser.backspace(3);
+
+            // if there is an operand in the last character in expression, backspace 2
+            } else if (ExpressionParser.getExpressionLength() > 1 && Utils.isOperand(display.value.substr(-1, 1)) ) {
+                ExpressionParser.backspace(2);
+
             // if last element is a closed paren, backspace 1
             } else if(display.value.substr(-1, 1) === ")") {
                 ExpressionParser.backspace(1);
                 ParenManager.incrementTotal();
-                
+
             // Backspace 2 if the last 2 characters are a constant (pi, e)
             } else if(ExpressionParser.getExpressionLength() > 1 && Utils.isConstant(display.value.substr(-2, 2).trim()) ) {
                 ExpressionParser.backspace(2);
-                
+
             // Backspace 3 if last characters are `EE `
             } else if(ExpressionParser.getExpressionLength() > 1 && display.value.substr(-3, 3) === "EE ") {
                 ExpressionParser.backspace(3);
-            
+
             // If last 12 characters are `<sup>□</sup>`, backspace 12
             } else if(ExpressionParser.getExpressionLength() > 1 && display.value.substr(-12, 12) === OPEN_CLOSE_SUP) {
                 ExpressionParser.backspace(12);
                 isExponential = false;
-            
+
             // ~~ nth square root ~~
-            // if nth square root with no digits, pop last element, replace with nothin and re-append popped element 
+            // if nth square root with no digits, pop last element, replace with nothin and re-append popped element
             } else if(/<sup>□<\/sup>√\d+$/.test(display.value)) {
                 var expression = display.value.split(" ");
                 var last_element = expression.pop();
@@ -561,7 +565,7 @@ DDH.calculator = DDH.calculator || {};
                 expression.push(last_element);
                 display.value = expression.join(" ");
                 yRootState = false;
-            
+
             // if nth square root with 1 digit, pop last element, replace with `<sup>□</sup>`, reappend popped element
             } else if(/<sup>\d{1}<\/sup>√\d+$/.test(display.value)) {
                 var expression = display.value.split(" ");
@@ -569,33 +573,33 @@ DDH.calculator = DDH.calculator || {};
                 last_element = last_element.replace(/<sup>\d{1}<\/sup>/g, OPEN_CLOSE_SUP);
                 expression.push(last_element);
                 display.value = expression.join(" ");
-                
+
             // if ends with `<sup>□</sup>`, backspace 12
             } else if(/<sup>\d{1}<\/sup>$/.test(display.value)) {
                 ExpressionParser.backspace(12);
                 display.value = display.value + OPEN_CLOSE_SUP;
-                
+
             // if `<sup></sup>` has numbers, backspace through the last number and reappend `</sup>`
             } else if(/<sup>\d+<\/sup>$/.test(display.value)) {
                 ExpressionParser.backspace(7);
                 display.value = display.value + CLOSE_SUP;
-            
+
             // backspace 2 if last char is ` ` and 2nd last char is numeric
             } else if(ExpressionParser.getExpressionLength() > 1 && (display.value[display.value.length-1] === " " && Utils.isNumber(display.value[display.value.length-2]))) {
                 ExpressionParser.backspace(2);
-                
+
             // backspace 1 if 2nd last char is not equal to ` `
             } else if (ExpressionParser.getExpressionLength() > 1 && display.value[display.value.length-2] !== " ") {
                 ExpressionParser.backspace(1);
-                
+
             // backspace 2 if 2nd last char is ` ` and 3rd last is an operand (+, -, x, etc)
             } else if(ExpressionParser.getExpressionLength() > 1 && (display.value[display.value.length-2] === " " && Utils.isOperand(display.value[display.value.length-3]))) {
                 ExpressionParser.backspace(2);
-                
+
             // if 2nd last char is ` `
             } else if(ExpressionParser.getExpressionLength() > 1 && display.value[display.value.length-2] === " ") {
                 ExpressionParser.backspace(1);
-                
+
             // if expression length is 1, then reset the display value and expression, and set cButton to state `C`
             } else if (ExpressionParser.getExpressionLength() === 1) {
                 display.value = "";
@@ -611,7 +615,8 @@ DDH.calculator = DDH.calculator || {};
             // if all else fails, back space 1
             ExpressionParser.backspace(1);
         }
-    } 
+
+    }
 
     /**
      * ~~ THE MAIN ENTRY POINT ~~
@@ -630,12 +635,14 @@ DDH.calculator = DDH.calculator || {};
         }
 
         // handles the display like a normal calculator
-        if(evaluated === true && Utils.isNumber(element) ) {
+        // If a new number / function / clear, bail and start new calculation
+        if(evaluated === true && (Utils.isNumber(element) || Utils.isMathFunction(element) || Utils.isConstant(element) || Utils.isClear(element)) ) {
             ExpressionParser.setExpression("Ans: " + display.value);
             display.value = "";
             usingState = false;
             evaluated = false;
-        } else if(evaluated === true && (!Utils.isOperand(element) && !Utils.isClear(element) && !Utils.isMiscMathFunction(element) && element !== "<sup>□</sup>" && element !== "!")) {
+        // if evaluated and new input is a postfix operand, continue on.
+        } else if(evaluated === true && !Utils.isPostfix(element)) {
             return false;
         } else {
             evaluated = false;
@@ -806,20 +813,6 @@ DDH.calculator = DDH.calculator || {};
                     usingState = false;
                     display.value = displayValue;
 
-                    /**
-                     * The math.js object
-                     *
-                     * evalmath is the global math.js object that is used throughout this codebase
-                     * to evaluate the infix expression that the user provides via the calculators
-                     * interface.
-                     */
-                    evalmath = math.create({
-                        // helps with rounding issues. The exception is trig functions
-                        // where it is rewritten as a number. See: `RewriteExpression.trig`
-                        number: 'BigNumber',
-                        precision: 11
-                    });
-
                     /**
                      * Bind the buttons
                      *
@@ -860,12 +853,23 @@ DDH.calculator = DDH.calculator || {};
                      * The calculator has a collapsed view when the user is viewing the device
                      * on a mobile device. The following two functions handle the touch events.
                      */
-                    $("#sci-tab").bind('touchstart', function() {
-                       $(".tile__calc .tile__tabs").css("left", "0");
-                    });
+                    $('.tile__options .tile__option span').click(function(e) {
+                        var $tabHandle = $(this).parent();
+                        if ($tabHandle.hasClass('tile__option--active')) {
+                            return;
+                        }
 
-                    $("#basic-tab").bind('touchstart',function() {
-                        $(".tile__calc .tile__tabs").css("left", "-310px");
+                        $('.tile__options .tile__option').removeClass('tile__option--active');
+
+                        $tabHandle.toggleClass('tile__option--active');
+
+                        var activeTab = $('.tile__options .tile__option.tile__option--active').data('tab');
+
+                        $('.tile__tabs')
+                            .removeClass(function (index, css) {
+                                return (css.match(/(^|\s)tile__tabs--single-[a-z]+/g) || []).join(' ');
+                            })
+                            .addClass('tile__tabs--single-'+activeTab);
                     });
 
                     /**
@@ -886,6 +890,10 @@ DDH.calculator = DDH.calculator || {};
                             evt = SHIFT_KEYCODES[key];
                         }
 
+                        if(evt === undefined) {
+                            return false;
+                        }
+
                         calculator(evt);
                         setFocus();
                         e.stopImmediatePropagation();
@@ -893,7 +901,7 @@ DDH.calculator = DDH.calculator || {};
 
                     /**
                      * Handles clicking on history items
-                     * 
+                     *
                      * If an item is clicked in the ledger section, the expression and result are loaded
                      * and passed to the Ledger object where it resets the calculators state and result
                      */
diff --git a/share/goodie/calculator/content.handlebars b/share/goodie/calculator/content.handlebars
index fdbb14c08..29af40476 100644
--- a/share/goodie/calculator/content.handlebars
+++ b/share/goodie/calculator/content.handlebars
@@ -3,18 +3,21 @@
     <div class="tile__calc clearfix">
         <button class="tile__skip-calc">Skip calculator</button>
         <button class="tile__input-trap"></button>
-        <div class="tile__display" id="calculatorscreen">
-            <span class="tile__display__aside" id="expression">{{{subtitle}}}</span>
+        <div class="tile__display">
+            <div class="tile__display__aside--wrap">
+                <span class="tile__display__aside" id="expression">{{{subtitle}}}</span>
+            </div>
             <span class="tile__display__main" id="display" tabindex="0">{{{title_html}}}</span>
 
             <ul class="tile__options">
-                <li class="tile__option tile__option__sci" id="sci-tab" data-tab="sci"><span>Scientific</span></li>
-                <li class="tile__option tile__option__basic tile__option--active" id="basic-tab" data-tab="basic"><span>Basic</span></li>
-                <!-- <li class="tile__option tile__option__history" data-tab="history"><span>History</span></li> // introducing in phase 3 // -->
+                <li class="tile__option tile__option__sci" data-tab="sci"><span>Scientific</span></li>
+                <li class="tile__option tile__option__basic tile__option--active" data-tab="basic"><span>Basic</span></li>
+                <li class="tile__option tile__option__history" data-tab="history" ><span>History</span></li>
             </ul>
         </div>
+
         <div class="tile__tabs">
-        
+
             <div class="tile__calc__col tile__tab__sci">
                 <span class="tile__ctrl__toggle">
                     <span>RAD</span>
@@ -47,7 +50,7 @@
                 <button class="tile__ctrl__btn" data-cmd="FN_POW_E" value="e<sup>□</sup>">e<sup>x</sup></button>
                 <button class="tile__ctrl__btn" data-cmd="CONST_E" value="e">e</button>
             </div>
-        
+
             <!-- basic calculations -->
             <div class="tile__calc__col tile__tab__basic">
                 <button class="tile__ctrl__btn tile__ctrl--double" id="clear_button" data-cmd="META_CLEAR" value="C">C</button>
@@ -73,10 +76,10 @@
                 <button class="tile__ctrl__btn" value=".">.</button>
                 <button class="tile__ctrl__btn tile__ctrl--important" data-cmd="META_PROCEED" value="=">=</button>
             </div>
-            
+
             <!-- the ledger (history) section of the calculators UI -->
             <ul class="tile__calc__col tile__history"></ul>
-            
+
         </div>
     </div>
-</div>
\ No newline at end of file
+</div>
diff --git a/share/goodie/calculator/ledger_item.handlebars b/share/goodie/calculator/ledger_item.handlebars
index f7139b174..2318a565c 100644
--- a/share/goodie/calculator/ledger_item.handlebars
+++ b/share/goodie/calculator/ledger_item.handlebars
@@ -1,4 +1,4 @@
 <li class="tile__past-calc tile__past-calc__tpl">
-    <span class="tile__past-formula">{{{ expression }}}</span>
-    <span class="tile__past-result">{{ result }}</span>
-</li>
\ No newline at end of file
+    <span class="tile__past-formula one-line">{{{ expression }}}</span>
+    <span class="tile__past-result one-line">{{ result }}</span>
+</li>