one-dark/cinnamon/sass/ui/menu.scss

//
// Popvers/Menus
//
.menu {
  color: $fg_color;
  border: 0;
  border-radius: 12px;
  background-color: transparentize($bg_color, 0.05);
}

.popup-sub-menu {
  background-color: $base_color;
  box-shadow: none;

  .popup-menu-item:ltr {
    padding-right: 1.75em;
  }
  .popup-menu-item:rtl {
    padding-left: 1.75em;
  }

  StScrollBar {
    padding: 4px;
    StBin#trough,
    StBin#vhandle {
      border-width: 0;
    }
  }
}

.popup-menu-content {
  padding: 1em 0em 1em 0em;
}
.popup-menu-item {
  padding: 0.4em 1.75em;
  spacing: 1em;
  // border: 1px solid transparent;
  border-left-width: 0;
  border-right-width: 0;

  &:active {
    color: $selected_fg_color;
    // border-color: transparentize($fg_color, 0.89);
    background-color: $selected_bg_color;
  }
  &:insensitive {
    color: transparentize($fg_color, 0.5);
    background: none;
  }
}

.popup-inactive-menu-item {
  //all icons and other graphical elements
  color: $fg_color;

  &:insensitive {
    color: $insensitive_fg_color;
  }
}

.popup-menu-boxpointer {
  -arrow-border-radius: 3px;
  -arrow-background-color: $bg_color;
  -arrow-border-width: 1px;
  -arrow-border-color: $borders_color;
  -arrow-base: 21px;
  -arrow-rise: 9px;
  -boxpointer-gap: 2px;
}

/*Scale view context menu*/
.popup-combo-menu {
  color: $fg_color;
  border: 1px solid $borders_color;
  border-radius: 3px;
  background-color: $base_color;
  box-shadow: none;
  padding: 1em 0em 1em 0em;
}

.popup-image-menu-item {
}

.popup-combobox-item {
  spacing: 2px;
  padding: 0.4em 0.2em;
  border: 1px solid transparent;
  border-left-width: 0;
  border-right-width: 0;
}

.popup-separator-menu-item {
  -gradient-height: 1px;
  -gradient-start: $separator_color;
  -gradient-end: $separator_color;
  -margin-horizontal: 0;
  height: 1px;
}

.popup-alternating-menu-item:alternate {
  font-weight: normal;
}

.popup-device-menu-item {
  spacing: 0.5em;
}

.popup-subtitle-menu-item {
  font-weight: normal;
}

.nm-menu-item-icons {
  spacing: 0.5em;
}

//
// 开始菜单
//
.menu {
  &-favorites-box {
    padding: 10px;
    transition-duration: 300;
    background-color: transparentize($base_color, 0.5);
    border: 1px solid transparentize($grey_color, .5);
    border-radius: 6px;
  }

  &-favorites-button {
    padding: 0.9em 1em;
    border: 0;
    border-radius: 6px;

    &:hover {
      background-color: $selected_bg_color;
    }
  }

  &-places {
    &-box {
      padding: 10px;
      border: 0px solid red;
    }

    &-button {
      padding: 10px;
    }
  }

  &-categories-box {
    padding: 10px 30px 10px 30px;
  }

  &-applications-inner-box,
  &-applications-outer-box {
    padding: 10px 10px 0 10px;
  }

  &-application-button {
    padding: 7px;
    border: 0;

    // This style is used in menu application buttons for applications which were newly installed
    &:highlighted {
      font-weight: bold;
    }

    &-selected {
      padding: 7px;
      color: $selected_fg_color;
      background-color: $selected_bg_color;
      border-radius: 6px;

      &:highlighted {
        font-weight: bold;
      }
    }

    &-label:ltr {
      padding-left: 5px;
    }
    &-label:rtl {
      padding-right: 5px;
    }
  }

  &-category-button {
    padding: 7px;
    border: 0;

    &-selected {
      padding: 7px;
      color: $selected_fg_color;
      background-color: $selected_bg_color;
      border-radius: 6px;
    }
    &-hover {
      background-color: red;
      border-radius: 2px;
    }
    &-greyed {
      padding: 7px;
      color: $insensitive_fg_color;
      border-radius: 6px;
    }

    &-label:ltr {
      padding-left: 5px;
    }
    &-label:rtl {
      padding-right: 5px;
    }
  }

  // Name and description of the currently hovered item in the menu
  // This appears on the bottom right hand corner of the menu
  &-selected-app-box {
    padding-right: 30px;
    padding-left: 28px;
    text-align: right;
    height: 2.2em;

    &:rtl {
      padding-top: 10px;
      height: 2.2em;
    }
  }

  &-selected-app-title {
    font-weight: bold;
  }

  &-selected-app-description {
    max-width: 150px;
  }

  &-search-box:ltr {
    padding-left: 30px;
  }
  &-search-box-rtl {
    padding-right: 30px;
  }
}

#menu-search-entry {
  width: 220px;
  min-height: 16px;
  margin-right:10px;
  font-weight: normal;
  border: 1px solid $grey_color;
  border-radius: 6px;
  caret-color: $fg_color;
  background-color: $base_color;
  @extend %entry;

  &:focus,
  &:hover {
    // box-shadow: 0 0 4px $selected_bg_color;
  }
}

.menu-search-entry-icon {
  icon-size: 1em;
  margin-right:6px;
  color: $fg_color;
}

/* Context menu (at the moment only for favorites) */
.menu-context-menu {
}