.sec-title{font-size:16px;font-weight:400;color:#7e7e7e;margin-bottom:15px}.item-title{font-size:19px;font-weight:600}.timeline-head{display:inline-block;width:100%;height:1px;background-color:#383838;margin-top:5px;margin-bottom:20px;position:relative}.timeline-head::after{content:"";display:inline-block;position:absolute;border-top:10px solid #000;border-right:7px solid #fff0;border-left:7px solid #fff0;border-bottom:7px solid #fff0;top:-3px}