bug fix

src/view/Manage/Model/index.less

@@ -10,7 +10,19 @@
     overflow: hidden;
   }
 
-  .tree-toggle-wrap {
+  .right {
+    flex: 1;
+    overflow: hidden;
+  }
+}
+
+.data-model-collapse {
+  .left {
+    width: 0 !important;
+  }
+}
+
+.tree-toggle-wrap {
   position: relative;
   width: 15px;
   height: 100%;
@@ -24,7 +36,7 @@
     right: 0;
     background: #f2f5fc;
     position: absolute;
-      top: calc(50% - 40px);
+    top: 50%;
     width: 12px;
     height: 80px;
     border-radius: 0 12px 12px 0;
@@ -32,16 +44,4 @@
     transform: translateY(-50%);
     cursor: pointer;
   }
-  }
-
-  .right {
-    flex: 1;
-    overflow: hidden;
-  }
-}
-
-.data-model-collapse {
-  .left {
-    width: 0 !important;
-  }
 }
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