JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrapper">
    <div class="sidebar_l">sidebar_l</div>
    <div class="sidebar_r">sidebar_r</div>
    
    <div class="content">content</div>
</div>

CSS

html, body {
    height:100%;
    margin:0;
    padding:0;
}

.wrapper {
    width:100%;
    min-width:600px;
    height:100%;
}

.sidebar_l,
.sidebar_r {
    width:200px;
    background:red;
    min-height:100%;
}
.sidebar_l {float:left;}
.sidebar_r {float:right;}

.content {
    width:100%;
    background:green;
    min-height:100%;
}