修改样式

src/views/knowledge-library/model/result-finish/index.module.less

@@ -7,7 +7,8 @@
     background: url('../../images/exam-default-bg.png') no-repeat top center;
     background-size: contain;
     height: 240px;
-    margin: 0 42px;
+    margin: 0 auto;
+    max-width: 286px;
   }
 }