JSFiddle - React, Tailwind, and code Playground

HTML

<div></div>

CSS

* {
    margin: 0;
    padding: 0;
}
div {
    width: 100vw;
    height: 50px;
    background: linear-gradient(-20deg, transparent 30%, rgba(255, 0, 0, 0.3) 31%, rgba(0, 0, 255, 0.3) 69%, transparent 70%), linear-gradient(yellow, green);
}