diff --git a/_includes/style.scss b/_includes/style.scss
index 79c2b60..362c2bd 100644
--- a/_includes/style.scss
+++ b/_includes/style.scss
@@ -14,7 +14,7 @@
$border-default: 1px solid #ccc;
// 基本設定
-$background: url({{ site.github.url }}/images/background.png);
+$background: url({{ site.github.url }}/{{ site.wiki.images_dir }}/background.png);
$font-color: #333;
$font-family: "Hiragino Kaku Gothic ProN", "Helvetica Neue", "meiryo", "arial", "sans-serif";
$font-size: 18px;
@@ -31,7 +31,7 @@ $container-padding-top-mobile: 1em;
$container-max-width: 1280px;
// ヘッダ
-$header-background: #f2f2f2;
+$header-background: #fff;
$header-height: 3em;
$header-link-color: #694;
$header-mobile-box-shadow: 0 0 5px 2px rgba(0,0,0,0.3);
diff --git a/_layouts/default.html b/_layouts/default.html
index c6c2d14..9639d0c 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -11,7 +11,7 @@ layout: compress
{% assign style = style_scss | scssify %}
{% comment %}アイコンのURL{% endcomment %}
-{% assign icon_url = site.github.url | append: "/images/icon.png" %}
+{% capture icon_url %}{{ site.github.url }}/{{ site.wiki.images_dir }}/icon.png{% endcapture %}
{% capture amp-boilerplate %}
body{-webkit-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-moz-animation:-amp-start 8s steps(1,end) 0s 1 normal both;-ms-animation:-amp-start 8s steps(1,end) 0s 1 normal both;animation:-amp-start 8s steps(1,end) 0s 1 normal both}@-webkit-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-moz-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-ms-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@-o-keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}@keyframes -amp-start{from{visibility:hidden}to{visibility:visible}}
@@ -47,13 +47,13 @@ body{-webkit-animation:none;-moz-animation:none;-ms-animation:none;animation:non