.course-detail__hero{width:100%;height:450px;overflow:hidden;background:#f8f9fa;position:relative}.course-detail__image{width:100%;height:100%;-o-object-fit:cover;object-fit:cover}@media(max-width:991px){.course-detail__hero{height:400px}}@media(max-width:768px){.course-detail__hero{height:250px}}