JSFiddle - React, Tailwind, and code Playground

HTML

<div class="img-wrapper"><img src="http://lorempixel.com/300/400/sports/1/" alt=""><span class="img-text">10 серия</span></div>

CSS

.img-wrapper {
    position: relative;
    display: inline-block;
}
.img-text {
    position: absolute;
    bottom: 20px;
    right: 0;
    background: #f96;
    color: #fff;
    padding: 10px;
}