diff --git a/devtools/hackdoc/tpl/base.html b/devtools/hackdoc/tpl/base.html
index 8b93b391..edaadf64 100644
--- a/devtools/hackdoc/tpl/base.html
+++ b/devtools/hackdoc/tpl/base.html
@@ -2,6 +2,7 @@
 <html lang="en">
     <head>
         <meta charset="utf-8">
+        <meta name="viewport" content="width=device-width, initial-scale=1">
         <title>hackdoc:{{ .Title }}</title>
         <style type="text/css">
 html, body, div, span, applet, object, iframe,
@@ -50,7 +51,7 @@ table {
 
 body {
     font-size: 14px;
-    line-height: 1.25em;
+    line-height: 1.25;
     background-color: #f0f0f0;
 }
 
@@ -250,12 +251,12 @@ html {
 }
 
 .page p {
-    line-height: 1.6em;
+    line-height: 1.6;
 }
 
 .page :not(li) > ul {
     padding-top: 0.5em;
-    line-height: 1.5em;
+    line-height: 1.5;
 }
 
 .page ul li {
@@ -328,6 +329,27 @@ html {
     text-decoration: none;
 }
 
+
+/** RWD Adjustments - split is based off current total layout width */
+@media only screen and (max-width: 1120px) {
+    .page, .wrapper {
+        flex-direction: column;
+    }
+    .content {
+        width: auto;
+        padding: 1rem;
+    }
+    .column { width: auto }
+    .sidebar { width: auto }
+
+    .content img {
+      max-width: 100%
+    }
+
+    .headerInner, .topbar {
+      padding: 1em 1em 1em 2em;
+    }
+}
         </style>
     </head>
     <body>
