JSFiddle - React, Tailwind, and code Playground

HTML

<div class="outer" style="position: static;">
    <div class="inner" style="position: static;">
        static,static
    </div>
</div>

<div class="outer" style="position: static;">
    <div class="inner" style="position: relative;">
        static,relative
    </div>
</div>


<div class="outer" style="position: relative;">
    <div class="inner" style="position: static;">
        relative,static
    </div>
</div>

CSS

.outer {
    border: 10px solid red;
    border-radius: 100px;
    overflow: hidden;
    width: 200px;
    height: 100px;
    margin: 20px;
}
.inner {
    background: blue;
    width: 100%;
    height: 100%;
}