.ch-grid {
margin: 20px 0 0 0;
padding: 0;
list-style:
none;
display: block;
text-align: center;
width:
100%;
}
.ch-grid:after,
.ch-item:before {
content: '';
display:
table;
}
.ch-grid:after {
clear: both;
}
.ch-grid li {
width:
220px;
height: 220px;
display: inline-block;
margin: 20px;
}