JSFiddle - React, Tailwind, and code Playground

HTML

<div class="parent">
    <div class="container"></div>
    <h1>Hello, it's me!</h1>
</div>

CSS

.parent {
    display:block;
    background-color:rgba(0, 0, 0, 1);
    background-size:cover;
    height:500px;
    width:500px;
    position: relative;
}

.container {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background:url('http://lorempixel.com/500/500/') 0 0 no-repeat;
    opacity: .5;
}

div h1 {
    color: white;
    position: relative;
    z-index: 2;
}