Rollover image w/ text

HTML

<div class="boxThird">
	<a class="btnBox boxOne" href="<?php bloginfo('url'); ?>/" title="About Heath, Fania &amp; Co"><span>About</span></a>
</div>

CSS

.boxThird {
	float: left;
	width: 33.33%;
	height: 400px;
	background: #000;
}
.boxThird span {
	margin-left: 25px;
	position: relative;
	top: 344px;
	text-decoration: none;
	border-bottom: 1px solid #fff;
}
.btnBox {
	display: block;
	text-align: left;
	color: #fff;
	text-shadow: 0px 0px 2px #555;
	text-transform: uppercase;
	text-decoration: none;
	font-weight: 400;
	font-size: 2em;
	letter-spacing: .125em;
}
.boxOne {
	height: 100%;
	width: 100%;
  position: relative;
}
.boxOne:before {
  content: '';
	background-image: url(https://i.imgur.com/izS0fLZ.jpg);
	background-position: center;
	background-size: cover;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  opacity: 1;
  transition: opacity 0.3s;
}
.boxOne:hover:before{
	opacity: 0.3;
}