.back-top-fade-enter-active[data-v-45012e47],.back-top-fade-leave-active[data-v-45012e47]{transition:opacity .2s,transform .2s}.back-top-fade-enter-from[data-v-45012e47],.back-top-fade-leave-to[data-v-45012e47]{opacity:0;transform:translateY(8px)}