JSFiddle - React, Tailwind, and code Playground
by Tan
HTML
<div id="form_contain">
<form id="form">
<p>hello</p>
<p>hello</p>
<p>hello</p>
<p>hello</p>
<p>hello</p>
<input type="submit" id="but">
</form>
<div id="capcha">captcha</div>
</div>CSS
#form_contain {position:relative;padding-bottom:100px;background-color:#cccccc;}
#capcha {margin-bottom:50px;position:absolute;left:0;bottom:0;height:50px;width:100%;background-color:yellow;}
#send {position:absolute;bottom:0;height:50px;}
#but {position:absolute;left:0;bottom:0;height:50px;background-color:#dddddd;}