.mobile-back-top{width:44px!important;height:44px!important;background-color:transparent!important;border:none!important;padding:0;border-radius:50%;box-shadow:none!important}.backtop-btn{width:100%;height:100%;border-radius:50%;display:flex;align-items:center;justify-content:center;line-height:0;background-color:var(--color-primary)}.backtop-btn .iconfont{font-size:22px;color:#fff}