diff --git a/404.html b/404.html
index 77e8146..2cb3570 100644
--- a/404.html
+++ b/404.html
@@ -29,14 +29,14 @@
 
   <body class="bg-light">
     <div class="container pt-5">
-      <div class="rounded mt-5 w-50 mx-auto border p-3 mb-5 bg-white rounded">
+      <div class="rounded mt-5 w-50 mx-auto border p-3 mb-5 bg-white">
         <div class="p-4">
           <i
             class="far fa-sad-tear"
             style="font-size: 50px; margin-left: 45%"
           ></i>
           <h1 class="text-center">Error-404</h1>
-          <blockquote>
+          <blockquote class="mb-4">
             <br />
             <h2>We could not find that page....!</h2>
             <p><i>Please check the url</i></p>
@@ -46,7 +46,7 @@ <h2>We could not find that page....!</h2>
           <button 
             class="mt-2 btn btn-outline-dark"
             style="margin-left: 40%; font-size: 1.5em; padding: 2px;"
-            onclick="history.back"
+            onclick="history.back()"
           >
             Go right back
           </button>
