html, body {
        background-color: transparent;
        margin: 0;
        padding: 0;
        overflow: hidden;
        height: 100%;
      }
      .blocklySvg {
        height: 100%;
        width: 100%;
        background-color: transparent !important; 
      }
      .blocklyToolboxDiv{
        color: #fff;
        background: rgba(21, 20, 20, 0.8) !important;
        width: 20%;
      }
      .blocklyTreeRow{
        line-height: 36px !important;
        height: 40px !important;
      }
      .blocklyTreeRow:hover{
          background-color: #3893e0 !important;
          border-radius: 2px;
          cursor: pointer !important;
      }
      .blocklyFlyoutBackground{
        fill:rgba(66, 95, 103, 0.53) !important;
      }