JSFiddle - React, Tailwind, and code Playground

HTML

<div class="header"></div>
<div class="container">
    <div class="playlist"></div>
    <div class="video"></div>
</div> 
<div class="footer"></div>

CSS

.header, .footer, .container{
    margin:0 auto;
    background:red;
    width:400px;
    min-height:100px;
}
.container{
    margin:20px auto;
    background:yellow;
    width:400px;
    overflow:hidden;
    padding:20px 0;
}
.playlist{
    width:100px;
    height:100px;
    float:right;
    background:blue;
    margin-right:20px;
}
.playlist + .video{
    width:200px;
    height:100px;
    margin-left:20px;
    background:green;
    float:left;
}
.video{
    width:200px;
    height:100px;
    margin:0 auto;
    background:green;
}