diff --git a/src/datepicker/datepicker.css b/src/datepicker/datepicker.css
index 613f5e6e16..a9af3ab849 100644
--- a/src/datepicker/datepicker.css
+++ b/src/datepicker/datepicker.css
@@ -13,3 +13,7 @@
 .uib-button-bar {
   padding: 10px 9px 2px;
 }
+
+.uib-left, .uib-right {
+  width: 100%
+}