.cate-img {background-color: #898989;}
.cate-img img {opacity: 0.5;}
.part{display:none}
.about-img iframe{width:100%;height:100%}
@media (max-width:1500px){.about .about-img{height:60vw}}
@media (max-width:768px){.about .about-img{width:91vw}}
@media (max-width:390px){.about .about-img{height:48vw}}