Center single item detail page

/* Center single item detail page */
@media (min-width: 768px) {
.container{ width: 750px; }
}
@media (min-width: 992px){
.container { width: 970px; }
}

@media (min-width: 1200px) {
.container { width: 1170px; }
}

.container {
padding-right: 15px;
padding-left: 15px;
margin-right: auto;
margin-left: auto;
}