mes-ui-d2/src/assets/style/theme/theme.scss

// 主题公用
.layout-main-group {
  height: 100%;
  width: 100%;
  background-size: cover;
  background-position: center;
  overflow: hidden;
  position: relative;
  // 背景上面的半透明遮罩
  .layout-main-mask {
    position: absolute;
    top: 0px;
    right: 0px;
    bottom: 0px;
    left: 0px;
  }
  // 主体
  .layout-main {
    position: absolute;
    top: 0px;
    right: 0px;
    bottom: 0px;
    left: 0px;
    // [布局] 顶栏
    .el-header {
      padding: 0px;
      // logo区域
      .logo-group {
        transition: width .3s;
        float: left;
        text-align: center;
        img {
          height: 60px;
        }
      }
      // 折叠侧边栏切换按钮
      .toggle-aside-btn {
        float: left;
        height: 60px;
        width: 60px;
        display: flex;
        justify-content: center;
        align-items: center;
        @extend %unable-select;
        i {
          font-size: 20px;
          margin-top: 4px;
        }
      }
      // [菜单] 顶栏
      .el-menu {
        float: left;
        border-bottom: none;
        background-color: transparent;
        %header-menu-item {
          @extend %unable-select;
          i.fa {
            font-size: 16px;
            margin-right: 4px;
          }
        }
        .el-menu-item {
          @extend %header-menu-item;
          border-bottom: none;
        }
        .el-submenu {
          @extend %header-menu-item;
          .el-submenu__title {
            border-bottom: none;
          }
        }
      }
      // 顶栏右侧的按钮
      .d2-header-right {
        float: right;
        height: 60px;
        display: flex;
        align-items: center;
        .btn-text {
          padding: 14px 12px;
          border-radius: 4px;
          margin: 0px !important;
          margin-left: 10px !important;
        }
        .el-dropdown {
          @extend %unable-select;
        }
      }
    }
    // [布局] 顶栏下面
    .el-container {
      // 侧边栏
      .el-aside {
        transition: width .3s;
        overflow: auto;
        // [菜单] 正常状态
        .el-menu {
          @extend %unable-select;
          background-color: transparent;
          border-right: none;
          .el-menu-item {
            i {
              margin-right: 5px;
              font-size: 16px;
            }
          }
        }
        .el-submenu {
          @extend %unable-select;
          .el-submenu__title {
            i {
              margin-right: 5px;
              font-size: 16px;
            }
            .el-submenu__icon-arrow {
              margin-top: -10px;
            }
          }
        }
        // 菜单为空的时候显示的信息
        .menu-empty {
          height: 160px;
          margin: 10px;
          margin-top: 0px;
          border-radius: 4px;
          display: flex;
          justify-content: center;
          align-items: center;
          flex-direction: column;
          @extend %unable-select;
          i {
            font-size: 30px;
            margin-bottom: 10px;
          }
          span {
            font-size: 14px;
          }
        }
        // [菜单] 折叠状态
        .el-menu--collapse {
          background-color: transparent;
          .el-submenu__title {
            text-align: center;
          }
        }
      }
      .el-main {
        padding: 0px;
        position: relative;
        overflow: hidden;
      }
    }
  }
}

// 每个主题特有的设置

.theme-#{$theme-name} {

  // 背景图片和遮罩
  .layout-main-group {
    background-color: $theme-bg-color;
    .layout-main-mask {
      background-color: $theme-bg-mask;
    }
  }

  // 菜单项目
  @mixin theme-menu-hover-style {
    color: $theme-menu-item-color-hover;
    i {
      color: $theme-menu-item-color-hover;
    }
    background-color: $theme-menu-item-background-color-hover;
  }
  .el-submenu__title {
    @extend %unable-select;
  }
  .el-menu-item {
    @extend %unable-select;
  }
  .el-submenu__title:hover {
    @include theme-menu-hover-style;
  }
  .el-menu-item:hover {
    @include theme-menu-hover-style;
  }
  .el-menu--horizontal .el-menu-item:not(.is-disabled):hover {
    @include theme-menu-hover-style;
  }
  .el-menu--horizontal .el-menu .el-submenu__title:hover {
    @include theme-menu-hover-style;
  }

  // [组件] d2-container-full
  .d2-container-full {
    border: $theme-container-border-outer;
    border-bottom: none;
    background-color: $theme-container-background-color;
    .d2-container-full__header {
      border-bottom: $theme-container-border-inner;
      background-color: $theme-container-header-footer-background-color;
    }
    .d2-container-full__footer {
      border-top: $theme-container-border-inner;
      background-color: $theme-container-header-footer-background-color;
    }
  }
  // [组件] d2-container-card
  .d2-container-card {
    border: $theme-container-border-outer;
    background-color: $theme-container-background-color;
    .el-card__header {
      border-bottom: $theme-container-border-inner;
      background-color: $theme-container-header-footer-background-color;
    }
  }
  
  // 顶栏
  .el-header {
    // 切换按钮
    .toggle-aside-btn {
      i {
        color: $theme-header-item-color;
        background: $theme-header-item-background-color;
        &:hover {
          color: $theme-header-item-color-hover;
        }
      }
    }
    // 顶栏菜单
    .el-menu {
      .el-menu-item {
        transition: border-top-color 0s;
        color: $theme-header-item-color;
        background: $theme-header-item-background-color;
        i.fa { color: inherit; }
        &:hover {
          color: $theme-header-item-color-hover;
          background: $theme-header-item-background-color-hover;
          i.fa { color: inherit; }
        }
        &:focus {
          color: $theme-header-item-color-focus;
          background: $theme-header-item-background-color-focus;
          i.fa { color: inherit; }
        }
        &.is-active {
          color: $theme-header-item-color-active;
          background: $theme-header-item-background-color-active;
          i.fa { color: inherit; }
        }
      }
      .el-submenu {
        .el-submenu__title {
          transition: border-top-color 0s;
          color: $theme-header-item-color;
          background: $theme-header-item-background-color;
          i.fa { color: inherit; }
          .el-submenu__icon-arrow {
            color: $theme-header-item-color;
          }
          &:hover {
            color: $theme-header-item-color-hover;
            background: $theme-header-item-background-color-hover;
            i.fa { color: inherit; }
            .el-submenu__icon-arrow {
              color: $theme-header-item-color-hover;
            }
          }
          &:focus {
            color: $theme-header-item-color-focus;
            background: $theme-header-item-background-color-focus;
            i.fa { color: inherit; }
            .el-submenu__icon-arrow {
              color: $theme-header-item-color-focus;
            }
          }
        }
      }
    }
    // 顶栏右侧
    .d2-header-right {
      .btn-text {
        color: $theme-header-item-color;
        &.can-hover {
          &:hover {
            color: $theme-header-item-color-hover;
            background: $theme-header-item-background-color-hover;
          }
        }
      }
    }
  }
  // [布局] 顶栏下面
  .el-container {
    // 侧边栏
    .el-aside {
      // 菜单为空的时候显示的信息
      .menu-empty {
        background-color: $theme-aside-menu-empty-background-color;
        i {
          color: $theme-aside-menu-empty-icon-color;
        }
        span {
          color: $theme-aside-menu-empty-text-color;
        }
        &:hover {
          background-color: $theme-aside-menu-empty-background-color-hover;
          i {
            color: $theme-aside-menu-empty-icon-color-hover;
          }
          span {
            color: $theme-aside-menu-empty-text-color-hover;
          }
        }
      }
      // [菜单] 正常状态
      .el-menu {
        .el-menu-item {
          color: $theme-aside-item-color;
          background: $theme-aside-item-background-color;
          i {
            color: $theme-aside-item-color;
          }
          &:hover {
            color: $theme-aside-item-color-hover;
            background: $theme-aside-item-background-color-hover;
            i {
              color: $theme-aside-item-color-hover;
            }
          }
          &:focus {
            color: $theme-aside-item-color-focus;
            background: $theme-aside-item-background-color-focus;
            i {
              color: $theme-aside-item-color-focus;
            }
          }
          &.is-active {
            color: $theme-aside-item-color-active;
            background: $theme-aside-item-background-color-active;
            i {
              color: $theme-aside-item-color-active;
            }
          }
        }
      }
      .el-submenu {
        .el-submenu__title {
          color: $theme-aside-item-color;
          background: $theme-aside-item-background-color;
          i {
            color: $theme-aside-item-color;
          }
          .el-submenu__icon-arrow {
            color: $theme-aside-item-color;
          }
          &:hover {
            color: $theme-aside-item-color-hover;
            background: $theme-aside-item-background-color-hover;
            i {
              color: $theme-aside-item-color-hover;
            }
            .el-submenu__icon-arrow {
              color: $theme-aside-item-color-hover;
            }
          }
        }
      }
    }
  }
}