JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<div class="container">
    <div class="row">
        <div class="col-xs-4">
            <div class="box">A</div>
        </div>
        
        <div class="col-xs-4">
            <div class="box">B</div>
        </div>
        
        <div class="col-xs-4">
            <div class="box">
                C
                <ul>
                    <li>example</li>
                    <li>example</li>
                    <li>example</li>
                    <li>example</li>
                    <li>example</li>
                </ul>
            </div>
        </div>
    </div>
    
    <div class="row">
        <div class="col-xs-4">
            <div class="box">HEY</div>
        </div>
        
        <div class="col-xs-4">
            <div class="box">HEY</div>
        </div>
        
        <div class="col-xs-4">
            <div class="box">HEY</div>
        </div>
    </div>
    
</div>

CSS

body { 
    font-family: 'Arial'; 
}
.box { 
    background: #ddd; 
    padding: 20px; 
    margin: 1px;
    height: 100%;
}
.col-xs-4 {
    padding: 0;
}