diff --git a/src/index.styl b/src/index.styl
index f0d0ab4..eeb0bbc 100644
--- a/src/index.styl
+++ b/src/index.styl
@@ -168,6 +168,7 @@ $expandSize = 7px
     z-index: 10
 
   .rt-tfoot
+    flex: 1 0 auto
     display: flex
     flex-direction: column
     box-shadow: 0 0px 15px 0px alpha(black, .15)