.introduce{padding-top:20px;ine-height:26px;color:#414a60;font-size:14px;margin-bottom:40px}.introduce .protocol{background:#fff;margin:37px auto 55px auto;padding:15px 45px 65px 45px;min-height:calc(100% - 330px);-webkit-box-sizing:border-box;box-sizing:border-box}.introduce .home-inner{max-width:1200px}.introduce .inner{max-width:1200px;margin:0 auto}.protocol h1{text-align:center;margin-bottom:50px;margin-top:25px;font-size:22px;font-weight:400}