<div class="ssilka">
	<a href="#">ССЫЛКА</a>
</div>

.ssilka {
	  width: 300px;
     height: 200px;
     background: #000;
		display: flex;
		align-items: center;
		justify-content: center;
}

.ssilka a {
	display: block;
	 height: 100%;
	 color: white;
	 }