JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<div class="container-fluid main-bg">
</div>

CSS

html{
  height: 100%;
}
body{
    background: #fff;
    color: #000;
    font-weight: 400;
    min-width: 320px;
    padding: 0;
    margin: 0;
    height: 100%;
}
img{
    max-width: 100%;
    height: auto;

}
.main-bg {
    background-color: #000;
    background-size: cover;
    background-repeat: no-repeat;
    height: 100%;
}