catalog.css

.catalog
{
    width:640px;
    align:center;
    display:table;
}

.product
{
    width:275px;
    height: 280px;
    float:left;
    border: 1px solid #c9c9c9;
    border-radius: 3px;
    padding: 10px;
    margin: 10px;
    text-align: center;
    vertical-align:middle;
    display:table-cell;
}