diff --git a/_layouts/default.html b/_layouts/default.html
index 56b53df2a..095ea6d36 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -14,48 +14,7 @@
     <link rel="stylesheet" href="{{ '/assets/css/style.css?v=' | append: site.github.build_revision | relative_url }}">
     {% include head-custom.html %}
     <style>
-      .main-content blockquote, .main-content h4 {
-        border: 0.1rem solid #155799;
-        border-radius: 0.5rem;
-        background-color: #e0ecf4;
-        padding: 1.2rem 0.75rem 0.75rem 0.75rem;
-        position: relative;
-        margin-top: 2rem;
-        color: #606c71;
-        margin-right: 0;
-      }
-      .main-content blockquote::before, .main-content h4::before {
-        content: "aider";
-        display: inline-block;
-        position: absolute;
-        top: -1rem;
-        left: 0.5;
-        padding: 0rem 0.5rem;
-        font-weight: bold;
-        background-color: #e0ecf4;
-        border: 0.05rem solid #155799;
-        border-radius: 0.5rem;
-        color: #606c71;
-      }
-
-      .main-content h4 {
-        border-color: #159957;
-        background-color: #e0f2ef;
-      }
-      .main-content h4::before {
-        content: "user";
-        border-color: #159957;
-        color: #606c71;
-        background-color: #e0f2ef;
-      }     
-      .btn {
-        display: inline-block;
-        width: auto;
-      }
-      .btn + .btn {
-        margin-top: 0;
-        margin-left: 0.75rem;
-      }
+    {% include head-custom.css %}
     </style>
   </head>
   <body>
