Update bootstrap col on mobile device

Author: MitkoIT

src/Views/email_2fa_show.php

@@ -5,7 +5,7 @@
 <?= $this->section('main') ?>
 
 <div class="container d-flex justify-content-center p-5">
-    <div class="card col-5 shadow-sm">
+    <div class="card col-12 col-md-5 shadow-sm">
         <div class="card-body">
             <h5 class="card-title mb-5"><?= lang('Auth.email2FATitle') ?></h5>