diff --git a/packages/extension/src/style/index.less b/packages/extension/src/style/index.less
index 02cf040a6..0e0fb5163 100644
--- a/packages/extension/src/style/index.less
+++ b/packages/extension/src/style/index.less
@@ -221,6 +221,11 @@
   border: 1px solid #93a3b4;
 }
 
+.lf-mini-map .lf-graph {
+  width: 100% !important;
+  height: 100% !important;
+}
+
 .lf-mini-map-graph {
   position: relative;
   overflow: hidden;