@nutui/nutui-react/dist/cjs/packages/backtop/style/style.css

京东风格的轻量级移动端 React 组件库，支持一套代码生成 H5 和小程序

:root,
page {
  --nut-scale-f: 1;
  --nut-scale-font: var(--nut-scale-f, 1);
  --nut-scale-icon: var(--nut-scale-f, 1);
  --nut-icon-height: calc(16px * var(--nut-scale-icon, var(--nut-scale-f, 1))) !important;
  --nut-icon-width: calc(16px * var(--nut-scale-icon, var(--nut-scale-f, 1))) !important;
  --nut-icon-line-height: calc(16px * var(--nut-scale-icon, var(--nut-scale-f, 1))) !important;
}

/* #ifdef harmony */
/* #endif */
/* #ifndef harmony */
/* #endif */
.nut-backtop {
  display: none;
}
.nut-backtop-show {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--nutui-hoverbutton-item-size, calc(40px * var(--nut-scale-f, 1)));
  height: var(--nutui-hoverbutton-item-size, calc(40px * var(--nut-scale-f, 1)));
  transition: all 0.2s ease-in-out;
}
.nut-backtop-show .nut-hoverbutton-item-container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}