JSFiddle - React, Tailwind, and code Playground

HTML

<div class="outerwrapper">
    <div class="header_left">&nbsp;</div>
    <div class="header_right">&nbsp;</div>
    <div class="left_column">&nbsp;</div>
    <div class="middle_top">&nbsp;</div>
<div class="menu_toggle"><a href="#" id="menu_toggle">toggle</a></div>
    <div class="main_window">&nbsp;</div>
    <div class="menu">&nbsp;</div>
</div>

CSS

html,body
{
    height: 100%;
    margin: 0;
    padding: 0;
}
div
{
    display: block;
    float: left;
    position: relative;
    overflow: hidden;
}
.outerwrapper
{
    width: 100%;
    min-height: 100%;
    height: 100%;
}
.header_left
{
    width: 80%;
    height: 20%;
    background: #f00;
}
.header_right
{
    width: 20%;
    height: 20%;
    background: #0f0;
}
.left_column
{
    width: 20%;
    min-height: 80%;
    height: 80%;
    background: #00f;
}
.middle_top
{
    width: 60%;
    height: 10%;
    background: #0f0;
}
.menu_toggle
{
    width: 20%;
    height: 10%;
    background: #f00;
}
.main_window
{
    width: 60%;
    height: 70%;
    min-height: 70%;
    background: #f00;
    overflow: auto;
}
.menu
{
    width: 20%;
    height: 70%;
    min-height: 70%;
    background: #00f;
}

JavaScript

$(document).ready(function(){
    $("#menu_toggle").toggle(function(){
        $(".menu").css("width", "0%");
        $(".main_window").css("width","80%");
        return false;
    },function(){
        $(".main_window").css("width","60%");        
        $(".menu").css("width", "20%");
        return false;
    });
});