diff --git a/components/date-picker/style/RangePicker.less b/components/date-picker/style/RangePicker.less
index b766864415..0bdf767eb9 100644
--- a/components/date-picker/style/RangePicker.less
+++ b/components/date-picker/style/RangePicker.less
@@ -195,13 +195,7 @@
     .@{calendar-prefix-cls}-footer-btn {
       padding-right: 12px;
       display: block;
-      &::after {
-        content: 'x';
-        height: 0;
-        font-size: 0;
-        overflow: hidden;
-        clear: both;
-      }
+      .clearfix;
     }
     .@{calendar-prefix-cls}-ok-btn {
       position: static;