diff --git a/app/assets/stylesheets/sass/_mixins.sass b/app/assets/stylesheets/sass/_mixins.sass
index 4a72a6d..9f5eec9 100644
--- a/app/assets/stylesheets/sass/_mixins.sass
+++ b/app/assets/stylesheets/sass/_mixins.sass
@@ -33,4 +33,9 @@ $bg_sub: #fdfdfd
  padding: 5px 10px 0px 10px
  border-radius: 5px 5px 0px 0px
  background: url('/images/icons/article_head.png') repeat-x
- color: #ffffff
\ No newline at end of file
+ color: #ffffff
+
+@mixin box-sizing($box-model)
+ -webkit-box-sizing: $box-model
+ -moz-box-sizing: $box-model
+ box-sizing: $box-model
diff --git a/app/assets/stylesheets/sass/articles.sass b/app/assets/stylesheets/sass/articles.sass
index 7903a5f..c41488f 100644
--- a/app/assets/stylesheets/sass/articles.sass
+++ b/app/assets/stylesheets/sass/articles.sass
@@ -17,6 +17,7 @@ div
  &.article
   > h1
    @include shaded-top
+   @include box-sizing(border-box)
    box-sizing: border-box
    padding: 8px
    margin: 0