diff --git a/src/Calendar.scss b/src/Calendar.scss
index b4eda90..f398db0 100644
--- a/src/Calendar.scss
+++ b/src/Calendar.scss
@@ -28,7 +28,7 @@
 }
 
 .Calendar-prev, .Calendar-next {
-    flex: 0 70px;
+    flex: 0 2.5em;
 }
 
 .Calendar-prev {