JSFiddle - React, Tailwind, and code Playground

HTML

<div class="main">
    <div class="wrap clear">
        <div class="inside">контентdfsgjsgjsghfs6g5h46s5g4h6s4g65h4s65gf4h64fgh</div>
        <div class="inside">контент</div>
    </div>
</div>

CSS

.main{
width: 700px; 
background-color: yellow;    
}

.wrap{
width: 100%;
background-color: red; 
}

.inside{
width: 30%;   
background-color: green;    
float: left;
}

.clear:before, .clear:after{
content: "";
display: table;
}
.clear:after{
clear: both;
}
.clear{
zoom: 1;
}