Smart_platform_ui/src/styles/theme/iview.scss

.theme-iview {
  .avue-logo{
    background: #001529;
    box-shadow: none;
    text-align: center;
    .avue-logo_title{
      padding: 5px 8px 8px 8px;
      border-top-left-radius: 5px;
      border-top-right-radius: 5px;
      border-bottom-left-radius: 3px;
      border-bottom-right-radius: 3px;
      font-size: 20px;
      color:#fff;
      font-weight: 500;
      display: inline;
      background-color: #409EFF;
    }
  }
  .avue-tags{
    padding:  3px 5px 5px 0;
    background: #f0f0f0;
    box-shadow: inset 0 0 3px 2px hsla(0,0%,39.2%,.1);
    .is-active{
      &:before{
        background: #409EFF !important;
      }
    }
    .el-tabs__item{
      padding: 0 15px !important;
      position: relative;
      height: 32px !important;
      line-height:32px !important;
      border: 1px solid #e8eaec!important;
      color: #515a6e!important;
      background: #fff!important;
      border-radius: 3px;
      &:before{
        content:'';
        display: inline-block;
        width: 12px;
        height: 12px;
        margin-right:10px;
        border-radius: 50%;
        background: #e8eaec;
      }
    }
  }

  .avue-sidebar{
    background: #001529;
    .el-menu-item{
      &.is-active {
          background-color:  #000c17;
          &:before {
            display: none;
          }
          i,span{
            color:#409EFF;
        }
      }
    }
     .el-submenu{
        .el-menu-item{
          &.is-active {
            background-color:  #409EFF;
            &:before {
              display: none;
            }
            i,span{
              color:#fff;
          }
        }
      }
    }
  }
}