.protocol{font-family:PingFangSC-Regular;font-size:12px;color:#333;text-align:justify}.protocol .protocol-header{color:#5c5c5c;font-size:15px;font-weight:500;height:50px;line-height:50px;background:#f9f9f9;padding:0;margin:0;width:100%;top:0;left:0;text-align:center;position:fixed}.protocol .protocol-header i{position:absolute;left:10px;top:13px;font-size:22px}.protocol .protocol-header:after{height:1px;position:absolute;z-index:0;left:0;top:49px;content:"";width:100%;background-image:linear-gradient(0deg,#e4e4e4 50%,transparent 0)}