优化思维导图

src/views/writtingAsstaint/components/WrittingMind.vue

@@ -214,7 +214,8 @@ defineExpose({
   background: #f5f7fa;
 }
 .mind-map {
-  width: 100%;
+  width: 92%;
   height: 100%;
+  margin: 0 auto;
 }
 </style>
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