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2021-08-03 70b77d9801f31727fc38e8cd1fd5111ddbb86967

 ruoyi-ui/src/assets/styles/sidebar.scss

@@ -135,9 +135,6 @@
          margin-left: 20px;
        }

        .el-submenu__icon-arrow {
          display: none;
        }
      }
    }