JSFiddle - React, Tailwind, and code Playground

by Ken Z

HTML

<div id="wrapper">
    <div id="left"></div>
    <div id="right"></div>
</div>

CSS

#wrapper{
    background-color: green;
    width: 100%;
    height: 500px;
    position: relative;
}
#left,
#right{
    position: absolute;
    height: 20px;
    width: 20px;
    top: 50%;
    margin-top: -10px;
    background-color: red;
}
#left{
    left: 20px;
}
#right{   
    right: 20px;
}