JSFiddle - React, Tailwind, and code Playground
HTML
<div id="container">
<div id="col_left">something here</div>
<div id="col_right">something here</div>
<div style="clear: both"></div>
</div>CSS
#container
{
width: 100 %;
clear: both;
}
#col_left
{
float: left;
width: 50%;
margin: 0px;
background-color:blue;
}
#col_right
{
float: right;
width: 50%;
margin: 0px;
background-color:red;
}