If you are not supporting old IE browsers, you can use display: flex and align content like below example.
ul li {
width:120px;
height:90px;
margin-bottom:5px;
border:1px solid;
display:table;
float:left;
}
a {
background:green;
display:flex;
align-items:flex-end;
width:100%;
height:100%;
}
<ul>
<li><a href="">ONE</a></li>
<li><a href="">TWO</a></li>
<li><a href="">THREE</a></li>
<li><a href="">FOUR</a></li>
<li><a href="">FIVE</a></li>
<li><a href="">SIX</a></li>
<li><a href="">SEVEN</a></li>
<li><a href="">EIGHT</a></li>
</ul>