One of the best HTML5 Css3 Bootstrap5 template for MultiLevel Forms is Multistep Form.
Code is written in a straightforward manner so that you may incorporate it into your website with ease. Any website for a business can utilize this template.
Latest Boostrap5 and HTML5
One Page Survey Form Html5 CSS Bootstrap5 Website Template
HTML Form with Multiple Uses and WC3 Validation
AJAX support (no page reloads)
Fully Customizable HTML Code that is W3C Valid
100% Responsive and Mobile-Friendly Layout
Required field jQuery Validation
Satisfaction Form with all required validations