.flex-jc-c{display:flex;flex-wrap:wrap;justify-content:center}
.aboutus-nav li{display:flex;align-items:center;justify-content:center;text-align:center;list-style:none;font-size:18px;color:var(--fontcolor);padding:10px 30px;border-bottom:1px solid #EAEAEA;position:relative;cursor:pointer}
.aboutus-nav li::after{content:'';width:100%;height:4px;background:var(--color);position:absolute;bottom:-2px;left:0px;opacity:0;transition:opacity .2s ease-in-out}
.aboutus-nav li.aboutusact::after,.aboutus-nav li:hover::after{opacity:1}
.aboutustab{padding-top:30px;display:none;opacity:0}
.aboutustab h6{font-size:22px;font-weight:bold;color:var(--fontcolor);margin-bottom:16px}
.aboutustab p{color:#333;font-size:16px;margin-bottom:10px}
.aboutustab .about-l{float:left;margin-right:3%}
.aboutus-content>.aboutustab:first-child{display:block;opacity:1}
@media (max-width:1600px){.aboutus-nav li{padding:10px 15px}}
@media (max-width:1024px){.aboutus-nav li{padding:10px 10px;font-size:15px}}
@media (max-width:500px){.aboutus-nav li{width:50%;text-align:center;font-size:14px;}}