I have a widget (code supplied by vendor) on the main page of the website. It's a box to search for a car. However, when viewed on mobile (or shrink browser to mobile view) the widget disappears. There is plenty of space around it on mobile but won't show up. Can't figure this one out. Can anyone help?

https://centralccu.com/

html: <div id="gcSearch" style="width: 300px;">
<script src="https://centralccu.groovecar.com/select-embed/ui/js/select-embed.js"></script>
</div>