I am working with an iframe that generates a form, and I would like to customize the CSS of this form. How can I go about editing the CSS?
<div class="quiz-container" style="text-align: center;" data-quiz="#######" data-preview="true" data-offset="0" data-autoscroll="yes"></div>
<script src="https://marketingfx.leadshook.io/s/js_embed"></script>
<div class="quiz-container" style="text-align: center;" data-quiz="#######" data-preview="true" data-offset="0" data-autoscroll="yes"></div>
<script src="https://marketingfx.leadshook.io/s/js_embed"></script>