@media screen and (max-width:450px){.phoneGrade[data-v-86dc3cf8]{width:100%}.topimg[data-v-86dc3cf8]{width:100%;position:relative}.topimg img[data-v-86dc3cf8]{width:100%;height:100%}.topimg .top_tit[data-v-86dc3cf8]{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);text-align:center}.topimg .top_tit .top_title[data-v-86dc3cf8]{height:2.1rem;font-size:16px;font-family:index_font;font-weight:400;color:#fff;line-height:2.1rem}.topimg .top_tit .top_titleEn[data-v-86dc3cf8]{height:2.1rem;font-size:12px;font-family:index_font;font-weight:400;color:#fff}.nav[data-v-86dc3cf8]{width:100%;background:#f4f4f4}.nav .navbar[data-v-86dc3cf8]{width:88%;margin:auto;box-shadow:inset 0 -.1rem .1rem 0 rgba(0,0,0,.03);border-radius:0 0 0 0;opacity:1;overflow-x:scroll;white-space:nowrap;position:relative}.nav .navbar .nav_item[data-v-86dc3cf8]{text-align:center;width:28%;height:16rem;line-height:16rem;display:inline-block;font-size:16px}.nav .navbar .xian[data-v-86dc3cf8]{width:28%;height:1rem;background:#0778ff;position:absolute;bottom:0}.gradeLsit[data-v-86dc3cf8]{width:100%;display:flex;flex-direction:column;align-items:center;margin-top:15rem;padding-bottom:15rem}.grade-list[data-v-86dc3cf8]{width:80%;margin-bottom:15rem;padding-bottom:15rem;margin:0 auto}.zizhiImg[data-v-86dc3cf8]{transition:all .15s;cursor:pointer}.zizhiImg img[data-v-86dc3cf8]{width:100%;height:100%}.huoban[data-v-86dc3cf8]{width:88%;margin:auto}.huoban .listBox[data-v-86dc3cf8]{display:grid;grid-template-columns:repeat(4,1fr);column-gap:1.6rem;row-gap:2.4rem}.huoban .listBox .imgbox[data-v-86dc3cf8]{width:40rem;height:40rem;background:hsla(0,0%,95.7%,.5);padding:8rem}.huoban .listBox .imgbox img[data-v-86dc3cf8]{width:100%;height:100%}}