#banner { background: url(/image/banner_product.jpg) no-repeat #4a6ede; background-position: center; } #bookInfo { line-height: 2; } #bookCover { max-width: 25% !important; } @media (max-width: 768px) { #bookCover { max-width: 50% !important; } } .price { color: #e54a4a; font-size: 22px; } #nav-tabContent { line-height: 2; font-size: 18px; min-height: 400px; }