diff --git a/src/styles/element-ui.scss b/src/styles/element-ui.scss
index 6af3bfd..0062411 100644
--- a/src/styles/element-ui.scss
+++ b/src/styles/element-ui.scss
@@ -42,3 +42,8 @@
     display: block
   }
 }
+
+// to fix el-date-picker css style
+.el-range-separator {
+  box-sizing: content-box;
+}