JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container">
   <div id="header">...</div>
   <div id="menu">...</div>
   <div id="content">...</div>
   <div id="footer">...</div>
</div>

CSS

#header, #menu, #content, #footer {
    width: 600px;
    height: 500px;
    background: #ccc;
    padding-left: 10px;
    display: inline-block;
}
#container {
    width: 2500px;
}