mdui/src/styles/mixin/layout-theme.less

a CSS Framework based on material design

.layout-theme(@rules) {
  & when (@globalLayoutDark = true) {
    .mdui-theme-layout-dark {
      @rules();
    }
  }
  & when (@globalLayoutAuto = true) {
    @media (prefers-color-scheme: dark) {
      .mdui-theme-layout-auto {
        @rules();
      }
    }
  }
}