JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container">
    <div id="element"></div>
</div>

CSS

#container {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background-color: orange;
    position: fixed;
    overflow: hidden;
    /*z-index: 1;*/
}

#element {
    width: 100px;
    height: 100px;
    background-color: blue;
    position: absolute;
    top: 150px;
    left: 100px;
    cursor: pointer;
}