@media screen and (max-width:750px){.main div a .tit{padding:.4rem 0 0 .1rem;white-space:nowrap;text-overflow:ellipsis;overflow:hidden;word-break:break-all;background:rgba(0,0,0,0.3)}.main .row4{width:7.2rem;margin:.5rem auto .4rem}.main .row4 a{width:1.8rem;display:block;float:left;text-align:center}.main .row4 a:nth-child(1) img{width:.8rem}.main .row4 a:nth-child(2) img{width:.65rem}.main .row4 a:nth-child(3) img{width:.8rem}.main .row4 a:nth-child(4) img{width:.7rem}.main .row4 a img{filter:grayscale(100%);-webkit-filter:grayscale(100%);-moz-filter:grayscale(100%);-ms-filter:grayscale(100%);-o-filter:grayscale(100%)}.main .row4 a:hover img{filter:grayscale(0%);-webkit-filter:grayscale(0%);-moz-filter:grayscale(0%);-ms-filter:grayscale(0%);-o-filter:grayscale(0%)}.header{padding:.25rem 0;position:relative}.header .login{position:absolute;top:.56rem;right:0;width:1.7rem;height:.46rem;line-height:.56rem;font-size:.14rem;color:#000}.header .login img{width:.46rem;height:.46rem;vertical-align:middle;float:left;margin-right:.12rem;margin-top:0}.footer{height:1.3rem;border-top:1px solid #d3d3d3;font-size:.14rem;padding:.25rem .1rem 0;text-align:center}.footer a{color:#000}.footer a:hover{color:#ec3432}.footer .link{width:100%;box-sizing:border-box;margin:.2rem 0}.footer .copyright{width:100%;color:#000;text-align:center}}