JSFiddle - React, Tailwind, and code Playground

HTML

<div class="myelem"></div>

CSS

.myelem {
    position: relative;
    background-color: #990000;
    background-image: url("http://lorempixel.com/200/100/");
    background-position: 5% 60%;
    background-position: -webkit-calc(50% - 100px) 60%;
    background-position: calc(50% - 100px) 60%;
    background-repeat: no-repeat;
    width: 700px;
    height: 400px;
}
.myelem:after {
    content: " ";
    position: absolute;
    left: 50%;
    border-right: 1px dashed #660000;
    top: 0;
    bottom: 0;
}