JSFiddle - React, Tailwind, and code Playground

HTML

<input type="date">

CSS

input {
    position:relative;
}

input:after {
    content: '';
    position:absolute;
    right: 10px;
    top: 5px;
    width: 10px;
    height: 10px;
    background: red;
}

input:hover:after {
    display: none;
}