.all-tool[data-v-0730dd36]{display:-webkit-box;display:-ms-flexbox;display:flex;-ms-flex-wrap:wrap;flex-wrap:wrap;width:100%;-webkit-box-pack:center;-ms-flex-pack:center;justify-content:center;background:#fff;-webkit-box-sizing:border-box;box-sizing:border-box}.all-tool .course-container[data-v-0730dd36]{height:400px;width:300px;position:relative}.all-tool .course[data-v-0730dd36]{z-index:1;position:absolute}.all-tool .code[data-v-0730dd36]{z-index:2;position:absolute}.btn-all[data-v-0730dd36]{text-align:center;margin:30px auto 0}