Update index.html

create/index.html

@@ -48,7 +48,7 @@ <h1>Create</h1>
       <br>
       <form method="post" enctype=".csv" accept=".csv">
         <label for="file">Upload a csv</label>
-        <input id="file" class = "form-control file_input" name="file" type="file" onchange="loadup(null, null)">
+        <input id="file" class = "form-control file_input" name="file" type="file" onchange="loadup(null, null)" accept=".csv">
         <button>Upload</button>
       </form>