.bei[data-v-611f0e1c]{background:url(../img/实验室1.287a6c71.jpg) no-repeat;background-size:cover;width:100%;height:930px}.bei .btn1[data-v-611f0e1c]{padding:20px 0 0 50px}.main[data-v-611f0e1c]{width:100%;height:720px;padding-top:50px}.main .main1[data-v-611f0e1c]{width:30%;height:680px;float:left;margin-left:5%}.main .main1 img[data-v-611f0e1c]{width:100%;height:100%}.main .main2[data-v-611f0e1c]{width:30%;height:680px;float:right;margin-right:5%}.main .main2 img[data-v-611f0e1c]{width:100%;height:50%}.bott[data-v-611f0e1c]{width:100%;display:flex;justify-content:space-around}