diff --git a/source/css/_layout/head.styl b/source/css/_layout/head.styl
index 87aa211..2a722bb 100644
--- a/source/css/_layout/head.styl
+++ b/source/css/_layout/head.styl
@@ -321,9 +321,11 @@
             background: var(--text-bg-hover)
 
           &:first-child
-            border-radius: 5px 5px 0 0
+            border-top-left-radius: 5px
+            border-top-right-radius: 5px
           &:last-child
-            border-radius: 0 0 5px 5px
+            border-bottom-left-radius: 5px
+            border-bottom-right-radius: 5px
           a
             display: inline-block
             padding: 8px 16px