Update 'views/file.html'

views/file.html

@@ -4,7 +4,7 @@
     {{ if .file }}
     	<style>{{ .css }}</style>    
         <div class="downloadParent">
-            <a href="/{{.fullname}}" class="downloadButton">Back to {{.fullname}}</a>
+            <a href="/{{.fullname}}" class="button">Back to {{.fullname}}</a>
         </div>
 
         <div class="userReadme">