How to reduce the width of the field using css?

I received a code to embed in the site, but I'm not able to reduce the width in the field to fill in email. Below is the code. Thanks in advance.

Code to put in head:

<script src="https://s3-sa-east-1.amazonaws.com/widgets.superlogica.net/embed.js"></script><scripttype="text/javascript">
/*{literal}<![CDATA[*/
superlogica.require("condominios");
superlogica.condominios("areadocondomino","areaCondominio","vgm","1");
/*]]>{/literal}*/
</script>
<div id="areaCondominio"></div>