JSFiddle - React, Tailwind, and code Playground

HTML

<div class="box">
    <h3>title</h3>
</div>

CSS

.box {
    margin: 50px;
    width: 400px;
    height: 200px;
    border: 1px solid black;
}
.box > h3 {
    position: absolute;
    background: red;
    height: 20px;
    margin-top: -12px;
    margin-left: 10px;
    padding: 0 10px;
}