diff --git a/src/routes/Dashboard/Monitor.less b/src/routes/Dashboard/Monitor.less
index 4acca07dee51f80464f6e2652843aaf2312381c0..e52dd30cce1291ad73b16dc647e0ca6d90e887e5 100644
--- a/src/routes/Dashboard/Monitor.less
+++ b/src/routes/Dashboard/Monitor.less
@@ -4,9 +4,11 @@
 .mapChart {
   padding-top: 24px;
   height: 457px;
+  text-align: center;
   img {
-    width: 100%;
-    max-height: 457px;
+    display: inline-block;
+    max-width: 100%;
+    max-height: 437px;
   }
 }