JSFiddle - React, Tailwind, and code Playground

HTML

<div id="page_content">
    
<div id="page_content_col_left">Col 1</div> 
<div id="page_content_col_right">Col 2</div>
    
</div>

CSS

#page_content
{
position:relative;
width:80%;
height:80px;
margin:auto;
border:0px solid #fff;
overflow:hidden;
}


#page_content_col_left
{
float:left;
position:relative;
width:20%;
height:100%;
background-color:#ff0;
}


#page_content_col_right
{
float:left;
position:relative;
width:80%;
height:100%;
background-color:#fff;
}