<div class="test1">
  
  <a ></a>
  
</div>

<div class="test2">
  
  <a></a>
  
</div>

div{
  display:flex;
  background:#000;
  width: 400px;
height: 400px;
  justify-content:center;
  align-items:center;
}
a{
 color:#fff; 
  background:#0f0;
  padding:50px;
 position:relative;
font-size:40px
}
a:before{
position:absolute;
top:25%;
left:39%;
content: "¶ ";
}
.test2 a{
    padding:90px;
}