snappymail/build/owncloud/rainloop-app/templates/index.php

<div style="box-sizing: border-box; width: 100%; height: 100%; padding: 0px; margin: 0px; background-color: #383c43; position: relative; overflow: hidden;"
><iframe id="rliframe" style="border: none; width: 100%; height: 100%; position: absolute; top: 0px; left: 0px; right: 0px; bottom: 0px;" tabindex="-1" frameborder="0"
 src="<?php echo $_['rainloop-url']; ?>"></iframe></div><?php OCP\Util::addScript('rainloop', 'resize');