ul.product-cats {
margin: 0 auto;
}
ul.product-cats li {
list-style: none;
margin-bottom: 4.236em;
text-align: center;
position: relative;
}
ul.product-cats li img {
margin: 0 auto; 
max-height: 20%;
border-radius: 50%;
transition: transform .2s;
}
ul.product-cats img:hover {
-ms-transform: scale(1.5); -o-transform: scale(1.5); -moz-transform: scale(1.5); -webkit-transform: scale(1.5); transition: transform .2s;
transform: scale(1.02); 
}
@media screen and (min-width:768px) {
ul.product-cats {
left: 0;
}
ul.product-cats li {
width: 25%;
display: inline-block;
margin-right: 8%;
}
}