JSFiddle - React, Tailwind, and code Playground

HTML

<ul class="catBlock">
 <li><a href="#">IP Phone</a></li>
 <li><a href="#">Dual SIM Switch Server</a></li>
 <li><a href="#">IP PBX</a></li>
</ul>

CSS

ul.catBlock{
    display: table;
    width:960px; 
    height: 270px; 
    border:1px solid #ccc; 
}

ul.catBlock li {
    list-style: none;
    display: table-cell; 
    text-align: center; 
    width:160px; 
    vertical-align: middle;
}

ul.catBlock li a { 
    display: block;
}