#wachat a {
    position: fixed;
    z-index: 9999;
    right: 0;
    float: right;
    top: 84%;
    margin-top: -25px;
    cursor: pointer;
    min-width: 50px;
    max-width: 150px;
    color: #fff;
    text-align: center;
    padding: 10px;
    margin: 0 auto 0 auto;
    -webkit-transition: All .5s ease;
    -moz-transition: All .5s ease;
    -o-transition: All .5s ease;
    -ms-transition: All .5s ease;
    transition: All .5s ease;
}

#wachat a img{
	width: 65px;
}
.page-layout-1column.catalog-product-view .product-item-details {
    background: #eff3ee;
    padding: 15px;
    /* margin-top: -4px; */
    width: 49% !important;
    margin: -4px 0px 0px 68px !important;
}
@media only screen and (max-width: 768px) {

.page-layout-1column.catalog-product-view .product-item-details {
    background: #eff3ee;
    width: 87% !important;
    margin: -4px 0px 0px 11px !important;
}
}