500.html in intro-0.4.0

- old
+ new

@@ -2,25 +2,25 @@
 <html>
 <head>
   <title>We're sorry, but something went wrong (500)</title>
   <meta name="viewport" content="width=device-width,initial-scale=1">
   <style>
-  body {
+  .rails-default-error-page {
     background-color: #EFEFEF;
     color: #2E2F30;
     text-align: center;
     font-family: arial, sans-serif;
     margin: 0;
   }
 
-  div.dialog {
+  .rails-default-error-page div.dialog {
     width: 95%;
     max-width: 33em;
     margin: 4em auto 0;
   }
 
-  div.dialog > div {
+  .rails-default-error-page div.dialog > div {
     border: 1px solid #CCC;
     border-right-color: #999;
     border-left-color: #999;
     border-bottom-color: #BBB;
     border-top: #B00100 solid 4px;
@@ -29,17 +29,17 @@
     background-color: white;
     padding: 7px 12% 0;
     box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
   }
 
-  h1 {
+  .rails-default-error-page h1 {
     font-size: 100%;
     color: #730E15;
     line-height: 1.5em;
   }
 
-  div.dialog > p {
+  .rails-default-error-page div.dialog > p {
     margin: 0 0 1em;
     padding: 1em;
     background-color: #F7F7F7;
     border: 1px solid #CCC;
     border-right-color: #999;
@@ -52,10 +52,10 @@
     box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
   }
   </style>
 </head>
 
-<body>
+<body class="rails-default-error-page">
   <!-- This file lives in public/500.html -->
   <div class="dialog">
     <div>
       <h1>We're sorry, but something went wrong.</h1>
     </div>