article{max-width: 1300px;padding:0 20px;    margin: 0 auto;}
.about-tit{color:var(--color);font-weight: var(--fontbold7);font-size:30px;text-align:center;}
.about-des{text-align:center;}
.star-list{display:flex;flex-wrap:wrap;justify-content: space-between;}
.star-list li{width:15%;text-align:center;margin:2% 0 4%;}
.star-list li img{transition: all .3s;}
.star-list li{transition: all .3s;}
.star-list li:hover img{filter: brightness(0);}
.star-list li p{margin-top:10px;}
.certSwiper{position:relative;}
.certSwiper .certSwiper-btn-box>div{position:absolute;top:50%;transform: translateY(-50%);z-index:2;cursor: pointer;}
.certSwiper .certSwiper-btn-box>div em{font-weight: var(--fontbold7);font-size:30px;}
.certSwiper .certSwiper-btn-box>div.certSwiper-btn-prev{left:0;}
.certSwiper .certSwiper-btn-box>div.certSwiper-btn-next{right:0;}
@media (max-width:768px){.star-list li{width:49%;margin:20px 0 0;}
.about-tit{font-size: 24px;}
.certSwiper{margin-top:30px;}}