.ebook_section{margin-bottom:60px}.ebook_head{text-align:center}.ebook_head{margin-bottom:70px}.ebook_box{width:32.25%;cursor:pointer;transition:background .3s ease;margin-right:1.62%;margin-bottom:20px;background:#eceff1;border:1px solid #e1e8eb;padding:30px 25px 10px}.iphone_im{width:66.05%;margin-bottom:20px}.ebook_box:nth-child(5n){margin-right:0}.ebook_h{display:none}.ebook_im{position:relative;margin:40px 0 100px}.ebook_box span{color:#1a1a1f;opacity:.8;font-size:20px;line-height:1.3}.ebook_box h5{color:#1a1a1f;opacity:.8;max-width:300px;line-height:1.6;margin-bottom:20px;font-weight:400}.iphone_im img{height:100% !important}.ebook_box p{color:#455a64;opacity:.8;line-height:1.6;font-size:16px}.ebook_box:hover{background-color:#6b1ac2}.ebook_box:hover span,.ebook_box:hover h5,.ebook_box:hover p{color:#fff}.ebook_box:hover .ebook_h{display:block}.ebook_box:hover .ebook_d{display:none}@media(max-width:1280px){.ebook_im{margin:30px 0 70px}}@media(max-width:1024px){.ebook_im{margin:25px 0 45px}.ebook_section{margin-bottom:40px}.ebook_head{margin-bottom:45px}.ebook_head h2 br{display:none}}@media(max-width:991px){.ebook_im{width:60px;margin:25px 0 30px}.ebook_box h5{line-height:1.4;font-size:18px;margin-bottom:10px}}@media(max-width:767px){.ebook_section,.ebook_head{margin-bottom:25px}.ebook_box:first-child,.iphone_im{width:100%;margin-right:0;text-align:center}.iphone_im img{height:auto !important}.iphone_im{order:-1}.ebook_box{width:49%;margin-right:2%}.ebook_box:nth-child(4n){margin-right:0}.ebook_box p{font-size:14px}.ebook_im{width:60px;margin:25px auto 30px}}@media(max-width:640px){.ebook_box{width:100%;margin-right:0;text-align:center}.ebook_box h5{font-size:16px;max-width:100%}}