JSFiddle - React, Tailwind, and code Playground

HTML

<input placeholder="focus on me then press tab" type="text">
<div id="container">
    <a id="inner-button" href="#">You can see me !</a>
</div>

CSS

input{
    width: 300px;
}
#container{
    display: block;
    background: blue;
    width: 200px;
    height: 30px;
    position: relative;
    overflow: hidden;
}

#inner-button{
    display: block;
    background: red;
    width: 20px;
    height: 20px;
    position: absolute;
    top: 5px;
    right: -20px;
}