JSFiddle - React, Tailwind, and code Playground

HTML

<div class="animation"></div>

CSS

.animation {
    background-color: #ee2f34;
    background-image: linear-gradient(to right, rgba( 255,255,255,1.0 ) 0%, rgba( 238,49,52,0.2 ) 100%);
    color: white;
    animation: slidein .5s linear 1s infinite alternate;
}