Я думаю, что это будет работать для вас, пожалуйста, проверьте демонстрационный фрагмент
.icon-tiles {
margin: 0;
padding: 0;
list-style: none;
display: -webkit-box;
display: -ms-flexbox;
display: flex;
-ms-flex-wrap: wrap;
flex-wrap: wrap;
-ms-flex-pack: distribute;
justify-content: space-around;
}
.tile-node {
position: relative;
display: -webkit-box;
display: -ms-flexbox;
display: flex;
-webkit-box-orient: vertical;
-webkit-box-direction: normal;
-ms-flex-direction: column;
flex-direction: column;
-webkit-box-flex: 1;
-ms-flex: 1 33.33333%;
flex: 1 33.33333%;
padding: 2rem;
}
.tile-node__content {
display: -webkit-box;
display: -ms-flexbox;
display: flex;
-webkit-box-orient: vertical;
-webkit-box-direction: normal;
-ms-flex-direction: column;
flex-direction: column;
-webkit-box-align: center;
-ms-flex-align: center;
align-items: center;
}
.tile-node__link {
background-color: #4d8acc;
padding: 10px;
/* flex: 1; */
height: 84px;
overflow: hidden;
justify-content: center;
flex-direction: column;
display: flex;
}
<ul class="icon-tiles">
<li class="tile-node">
<a href="#" class="tile-node__link">
<div class="tile-node__content tile-node__content--calendar">
<span class="tile-node__text">My Link One My Link One My Link One My Link One</span>
</div>
</a>
</li>
<li class="tile-node">
<a href="#" class="tile-node__link">
<div class="tile-node__content tile-node__content--bus">
<span class="tile-node__text">Link two</span>
</div>
</a>
</li>
<li class="tile-node">
<a href="#" class="tile-node__link">
<div class="tile-node__content tile-node__content--map">
<span class="tile-node__text">Another link</span>
</div>
</a>
</li>
<li class="tile-node">
<a href="#" class="tile-node__link">
<div class="tile-node__content tile-node__content--essentials">
<span class="tile-node__text">Another one</span>
</div>
</a>
</li>
<li class="tile-node">
<a href="#" class="tile-node__link">
<div class="tile-node__content tile-node__content--reminder">
<span class="tile-node__text">New link twooooo</span>
</div>
</a>
</li>
<li class="tile-node">
<a href="#" class="tile-node__link">
<div class="tile-node__content tile-node__content--book">
<span class="tile-node__text">Link three</span>
</div>
</a>
</li>
</ul>