diff --git a/assets/css/style-gsod.css b/assets/css/style-gsod.css
index 455adc28..c75191d6 100644
--- a/assets/css/style-gsod.css
+++ b/assets/css/style-gsod.css
@@ -24,3 +24,23 @@ body {
 .green{color:#518e04;}
 
 .yellow{color:#f9d72c;}
+
+img {
+	padding: 0 1em 0 1em;
+}
+
+table {
+	border-spacing: 0;
+	border-collapse: collapse;
+}
+
+th {
+	background-color: #ffffe5;
+}
+
+th, td {
+	border-style: solid;
+	padding: 4px;
+	text-align: left;
+	vertical-align: top;
+}
diff --git a/gsod-2019.html b/gsod-2019.html
index a58582ff..759e010c 100644
--- a/gsod-2019.html
+++ b/gsod-2019.html
@@ -8,13 +8,6 @@
 	<link href="assets/css/style-gsod.css" rel="stylesheet">
 
 	<link href="assets/fonts/open-sans/all.css" rel="stylesheet">
-
-    <style>
-        img { padding: 0 1em 0 1em; }
-        table { border-spacing: 0; border-collapse: collapse; }
-        th { background-color: #ffffe5; }
-        th, td { border-style: solid; padding: 4px; text-align: left; vertical-align: top; }
-    </style>
 </head>
 <body>
 
diff --git a/gsod-2020.html b/gsod-2020.html
index 2a736f76..21bae704 100644
--- a/gsod-2020.html
+++ b/gsod-2020.html
@@ -8,13 +8,6 @@
 	<link href="assets/css/style-gsod.css" rel="stylesheet">
 
 	<link href="assets/fonts/open-sans/all.css" rel="stylesheet">
-
-    <style>
-        img { padding: 0 1em 0 1em; }
-        table { border-spacing: 0; border-collapse: collapse; }
-        th { background-color: #ffffe5; }
-        th, td { border-style: solid; padding: 4px; text-align: left; vertical-align: top; }
-    </style>
 </head>
 <body>
 
diff --git a/howto/MakeCodeParametric.html b/howto/MakeCodeParametric.html
index 872be13e..e0f0bab8 100644
--- a/howto/MakeCodeParametric.html
+++ b/howto/MakeCodeParametric.html
@@ -11,29 +11,6 @@
 
     <script src="../assets/js/d3.js"></script>
     <script src="../assets/js/d3.layout.cloud.js"></script>
-
-    <style>
-        img {
-            padding: 0 1em 0 1em;
-        }
-
-        table {
-            border-spacing: 0;
-            border-collapse: collapse;
-        }
-
-        th {
-            background-color: #ffffe5;
-        }
-
-        th,
-        td {
-            border-style: solid;
-            padding: 4px;
-            text-align: left;
-            vertical-align: top;
-        }
-    </style>
 </head>
 
 <body>