JSFiddle - React, Tailwind, and code Playground

HTML

<body>
    <div class="left">
    <div class="div1">Div1</div>
    <div class="div2">Div2</div>
    </div>
    <div class="div3">Div3</div>
    
</body>

CSS

div.div1 {
    float: left;
    height: 400px;
    margin-right: 10px;
    width: 200px;
    background-color:red;
}

div.div3 {
    height: 425px;
    overflow: hidden;
    background-color:blue;
}

div.div2 {
    clear: left;
    float: left;
    height: 15px;
    margin-top: 10px;
    background-color:green;
}