JSFiddle - React, Tailwind, and code Playground

by seadonk

HTML

<div class="before"></div>
<section id="banner">
    <video id="videobcg" preload="auto" autoplay="true" loop="loop" muted="muted" volume="0">
        <source src="https://static.lumosity.com/resources/home_page_templates/574/neuralnetwork.mp4" type="video/mp4">
            <source src="movie.webm" type="video/webm">Sorry, your browser does not support HTML5 video.</video>
    <p>This is text that is in front of video, we do not want the z-index of video to be greater than content. Hence background!</p>
</section>
<div class="after"></div>

CSS

.after, .before {
    height:50px;
    background-color: gray;
    margin-top: 10px;
    margin-bottom: 10px;
}
div, section {
    border: 1px solid black;
    box-sizing: border-box;
}
#banner {
    position: relative;
    height:300px;
    width:100%;
    overflow: hidden;
}
#videobcg {
    position: absolute;
    top: 0;
    left: 0;
    min-width: 100%;
    min-height: 100%;
    height:auto;
    width:auto;
    z-index: -100;
}