JSFiddle - React, Tailwind, and code Playground

HTML

<div id="box">
    <img id="image" src="http://guide.denverpost.com/media/photos/full/mountain_600x600.jpg" width="100%" height="100%"/>
    <input type="file" id="file"/>
</div>

CSS

#box {
    width: 300px;
    height: 300px;
    padding: 10px;
    border: 1px solid #999;
    position: relative;
}
#file {
    width: 60%;
    height: 100%;
    background: rgba(150,225,150,0.5);
    line-height: 300px;
    vertical-align: middle;
    text-align: center;
    padding: 0 20%;
    margin-top: -334px;
    color: #FFF;
    font-weight: bold;
}