hugo-coder/assets/scss/_float_dark.scss

@mixin float_dark {
  .float-container {
    a {
      color: $alt-fg-color-dark;
      background-color: $alt-bg-color-dark;
      &:hover, &:focus {
        color: $link-color-dark;
        @media only screen and (max-width : 768px) {
          color: $alt-fg-color-dark;
        }
      }
    }
  }
}

body.colorscheme-dark {
  @include float_dark()
}

 body.colorscheme-auto {
  @media (prefers-color-scheme: dark) {
    @include float_dark()
  }
}