JSFiddle - React, Tailwind, and code Playground

HTML

<div id="wrapper">
    <iframe id="content" src="https://player.vimeo.com/video/98746172" frameborder="0"></iframe>
</div>

CSS

#wrapper {
    position: relative;
    width: 100%;
}
#wrapper:before {
    content:"";
    display: block;
    padding-top: 56.25%;
}
#content {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}