JSFiddle - React, Tailwind, and code Playground

by Curry

HTML

<div class="top">
    <span class="arrow" style="left:40%"></span>
</div>
<article>
    <h1>Title text</h1>
    <p>Lorem ipsum dolor sit amet.</p>
</article>

CSS

.top {
    background:url(http://blog.positscience.com/wp-content/uploads/2013/08/ice-cream3.jpg);
    background-size:cover;
    width:300px;
    height:180px;
    position:relative;
    overflow:hidden;
}
article {
    background:#aaa;
    width:250px;
    padding:25px;
    color:white;
}
.arrow {
    border:30px solid #aaa;
    border-bottom:none;
    border-color:transparent #aaa transparent #aaa;
    position:absolute;
    left:0;
    bottom:0;
}
.arrow:before, .arrow:after {
    content:'';
    position:absolute;
    width:5000px;
    bottom:0;
    height:30px;
    background:#aaa;
}
.arrow:before {
    right:30px;
}
.arrow:after {
    left:30px;
}
}