JSFiddle - React, Tailwind, and code Playground

HTML

<div class="spinnerContainer"></div>

CSS

.spinnerContainer {
    width: 40px;
    height: 50px;
    border-bottom-right-radius: 100px;
    border-top-right-radius: 100px;
    border: 10px solid gray;
    transform: rotate(0deg);
    border-top-left-radius: 15px;
    border-bottom-left-radius: 15px;
}