diff --git a/_includes/style.scss b/_includes/style.scss
index eaf1505..06185f4 100644
--- a/_includes/style.scss
+++ b/_includes/style.scss
@@ -16,8 +16,8 @@ $border-default: 1px solid #ccc;
 // 基本設定
 $background:       url({{ site.github.url }}/images/background.png);
 $font-family:      "Hiragino Kaku Gothic ProN", "Helvetica Neue", "meiryo", "arial", "sans-serif";
-$font-size:        15px;
-$font-size-mobile: 16px;
+$font-size:        16px;
+$font-size-mobile: 17px;
 $text-color:       #444;
 
 // コンテナ