gnome-shell/data/theme/gnome-shell-sass/widgets/_quick-settings.scss

.quick-settings {
  padding: 4 * $base_padding;
}

.quick-settings-grid {
  spacing-rows: 3 * $base_padding;
  spacing-columns: 2 * $base_padding;
}

.quick-toggle {
  border-radius: 99px;
  min-width: 11.5em;
  max-width: 11.5em;
  min-height: 44px;

  &:checked { @include button(default); }

  & > StBoxLayout { spacing: $base_padding; }

  /* Move padding into the box; this is to allow menu arrows
     to extend to the border */
  &.button { padding: 0; }
  & > StBoxLayout { padding: 0 2 * $base_padding; }

  .quick-toggle-label { font-weight: bold; }
  .quick-toggle-icon, .quick-toggle-arrow { icon-size: $base_icon_size; }
}

.quick-menu-toggle {
  &:ltr > StBoxLayout { padding-right: 0; }
  &:rtl > StBoxLayout { padding-left: 0; }

  & .quick-toggle-arrow {
    background-color: transparentize($fg_color, 0.9);
    padding: 8px;

    &:ltr { border-radius: 0 99px 99px 0; }
    &:rtl { border-radius: 99px 0 0 99px; }
  }
}

.quick-slider {
  padding: 0 $base_padding;

  & > StBoxLayout { spacing: $base_padding; }

  .slider-bin {
    &:focus {@include button(focus);}
    min-height: 16px; // slider size
    padding: $base_padding;
    border-radius: 99px;
  }
  .quick-toggle-icon { icon-size: $base_icon_size; }
  .icon-button { background-color: transparent; }
}

.quick-toggle-menu {
  background-color: $card_bg_color;
  border-radius: $base_border_radius*2.75;
  padding: $base_padding*2.75;
  margin: 0 $base_padding*2.75;

  & .header {
    spacing-rows: 0.5 * $base_padding;
    spacing-columns: $base_padding*2;
    padding-bottom: 2 * $base_padding;

    & .icon {
      icon-size: $base_icon_size*1.5; // a non-standard symbolic size but ok
      border-radius: 999px;
      padding: 1.5 * $base_padding;
      background-color: lighten($bg_color, 10%);

      &.active { background-color: $selected_bg_color; }
    }

    & .title {
      @extend %title_3;
    }

    & .subtitle {
      @extend %caption_heading;
    }
  }
}

.quick-toggle-menu-container {
  padding: 2 * $base_padding $base_padding 0;
 }

.quick-settings-system-item {
  & > StBoxLayout { spacing: 2 * $base_padding; }

  & .power-item {
    min-height: 0;
    min-width: 0;

    &:insensitive {
      @include button(normal);
      background-color: transparent;
    }
  }
}