JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container">

<div id="one"></div>
<div id="two"></div>
    
    
</div>

CSS

#container{
    height: 300px;
    background: url('http://farm8.staticflickr.com/7358/9532233404_58763bd668_b.jpg') no-repeat;
    position: relative;
}

#one {
    position: absolute;
    width: 100px;
    left: 0;
    bottom: 0;
    border-bottom: 20px solid green;
    border-right: 20px solid transparent;
}

#two {
    position: absolute;
    left: 120px;
    bottom: 0;
    right: 0;
    border-bottom: 20px solid green;
    border-left: 20px solid transparent;
}