nutui-taro-upgrade/dist/packages/backtop/index.css

@nutui/nutui-taro 对京东风格组件库的taro4 版本支持

.nut-theme-dark .nut-backtop.show{background:var(--nut-dark-background, #131313);color:var(--nut-dark-color, var(--nut-white, #fff))}.nut-backtop{display:none;position:fixed}.nut-backtop.show{width:40px;height:40px;background:var(--nut-white, #fff);border:1px solid var(--nut-backtop-border-color, #e0e0e0);border-radius:50%;display:flex;align-items:center;justify-content:center}.nut-backtop.show :active{background:rgba(0,0,0,.1)}.nut-backtop-main{transition:all .2s ease-in-out}