.product_variants {margin-right:10px;}
.product_variants img {-webkit-transition: 0.2s; /* Safari */
    transition: 0.2s;}
.product_variants img:hover {border: 1px solid #999;}
.img-thumbnail {
    display: inline-block;
    max-width: 100%;
    height: auto;
    padding: 1px;
    line-height: 1.42857143;
    border: 0px solid #ddd;
    border-radius: 4px;
    -webkit-transition: all .2s ease-in-out;
    -o-transition: all .2s ease-in-out;
    transition: all .2s ease-in-out;
    padding: 0px;
}