@media(max-width: 768px){body{font-size:12px}}header{text-align:right;background-color:#f8f8f8;line-height:60px}header .company-name{margin:0 10px;font-weight:bold;color:#007bff}header .nav-item{display:inline-block;padding:0 10px;color:#666;font-weight:bold}@media(max-width: 768px){header{line-height:40px;font-size:12px}}.public-container{padding:0 10px;max-width:1200px;width:100%;margin:0 auto;overflow:hidden}.banner{height:500px;background:center/cover no-repeat;background-image:url(../img/billboard.jpg)}@media(max-width: 768px){.banner{height:280px}}h2{margin:30px 0;text-align:center;color:#007bff}.block{min-height:400px;margin:0 auto}.block:nth-child(2n){background-color:#eee}@media(max-width: 768px){.block{min-height:250px}}#about-us img{margin-left:20px;width:280px;float:right}@media(max-width: 768px){#about-us img{width:120px}}.concat{text-align:center}.concat .item{vertical-align:top;display:inline-block;width:30%;box-sizing:border-box;padding:0 20px;color:#999}.footer{padding:20px 10px;background-color:#666;color:#fff;text-align:center}