body{overflow:auto}.company_introduction_header_box{height:170px}.company_introduction_body{margin-top:170px}.company_introduction_header_con{position:absolute;bottom:0;width:100%;min-width:1271px;height:60px;color:#fff;text-align:center;border-top:1px solid gray;display:flex;justify-content:center;align-items:center}.company_introduction_header_inner{position:relative;padding:10px 30px;font-size:20px;color:#fff}.company_introduction_header_inner.active,.company_introduction_header_inner:hover{font-weight:700}.company_introduction_header_inner:after{content:"";position:absolute;left:50%;bottom:54px;width:0;height:3px;background-color:#fff;transition:width .3s ease-in-out,left .3s ease-in-out}.company_introduction_header_inner:hover:after{width:100%;left:0}.company_introduction_header_inner.active:after{width:100%;left:0;background-color:#fff}@media (max-width:1271px){.company_introduction_header_con{min-width:810px}.company_introduction_header_inner{padding:10px;font-size:16px}.company_introduction_header_inner:after{bottom:51px}}@media (max-width:810px){.company_introduction_body{margin-top:50px}}