.Class_box{width:100%;margin-top:60px;overflow:hidden}.Class_box .class_app_box{width:calc(100% - 20px);margin:20px auto;max-width:1080px}.Class_box .class_app_box .cla_name{font-size:20px;margin-bottom:20px}.Class_box .class_app_box .tn_box{width:100%;display:grid;grid-template-columns:repeat(auto-fill, minmax(250px, 1fr));gap:10px}.loading_heij_box{width:100%}.loading_heij_box img{height:30px;width:30px;margin:0 auto;display:block;animation:loading 1s linear infinite;animation-delay:.5s;animation-fill-mode:forwards;animation-timing-function:linear}@keyframes loading{0%{transform:rotate(0deg)}100%{transform:rotate(360deg)}}.dixian{width:100%;text-align:center;font-size:12px;color:#999;margin-top:20px}