WhiteSur-gtk-theme/src/sass/gnome-shell/extensions-3-28/_misc.scss

// Simple Dock
#dash:desktop {
  background-color: $panel_bg;
}

//  OpenWeather Extension
.openweather {
  &-button,
  &-button-action,
  &-menu-button-container,
  &-button-box {
    border: 1px solid transparent !important;
  }

  &-provider {
    // generic text buttons are allocated with y-expand-ed
    padding: 0 16px;
    font-weight: 500;
    @include button(flat-normal);
    &:hover { @include button(flat-hover); }
    &:focus { @include button(flat-focus); }
    &:active { @include button(flat-active); }
    &:insensitive { @include button(flat-disabled); }
    border: 1px solid transparent !important;
  }

  &-current {
    &-icon,
    &-summary,
    &-summarybox {
      background: none;
      color: $fg_color;
    }

    &-databox-values {
      background: none;
      color: $hint_fg_color;
    }

    &-databox-captions {
      background: none;
      color: $hint_fg_color;
    }
  }

  &-forecast {
    &-icon,
    &-summary {
      background: none;
      color: $alt_fg_color;
    }

    &-day,
    &-temperature {
      background: none;
      color: $hint_fg_color;
    }
  }

  &-sunrise-icon,
  &-sunset-icon,
  &-build-icon { color: $alt_fg_color; }
}

//
// Pop_OS cosmic widget styling
//
.cosmic-dock {
  #dock {
    background-color: $dash_bg;
    border-radius: $dash_radius;
    border: 1px solid if($variant == 'light', rgba(black, 0.03), rgba(black, 0.35));
    box-shadow: inset 0 0 0 1px rgba(white, 0.05);
    padding: $container_padding;
    margin: 6px !important;
  }

  &.extended #dock {
    border-radius: 0 !important;
    margin: 0 !important;
  }
}