diff --git a/minerva.less/minerva.variables.less b/minerva.less/minerva.variables.less
index 7526935..4e4e63a 100644
--- a/minerva.less/minerva.variables.less
+++ b/minerva.less/minerva.variables.less
@@ -46,8 +46,8 @@
 @titleSectionSpacingBottom: 25px;
 
 // Page actions
-@tabBorderSize: ( 1em / 16px ) * 2;
 @taglineFontSize: 0.85em;
+@pageActionBorder: 1px;
 
 // colors
 @chromeColor: @grayLightest;
diff --git a/resources/skins.minerva.amc.styles/tabs.less b/resources/skins.minerva.amc.styles/tabs.less
index e604836..f22a6ab 100644
--- a/resources/skins.minerva.amc.styles/tabs.less
+++ b/resources/skins.minerva.amc.styles/tabs.less
@@ -18,6 +18,6 @@
 	}
 	// note core doesn't use BEM.
 	&.selected {
-		border-bottom: @tabBorderSize solid @colorGray5;
+		border-bottom: (@pageActionBorder * 2) solid @colorGray5;
 	}
 }
diff --git a/resources/skins.minerva.base.styles/pageactions.less b/resources/skins.minerva.base.styles/pageactions.less
index b1789dc..5010f7b 100644
--- a/resources/skins.minerva.base.styles/pageactions.less
+++ b/resources/skins.minerva.base.styles/pageactions.less
@@ -25,8 +25,8 @@
 	overflow: hidden;
 	width: 100%;
 	margin-top: -2px;
-	border-top: 1px solid @colorGray14;
-	border-bottom: 1px solid @colorGray12;
+	border-top: @pageActionBorder solid @colorGray14;
+	border-bottom: @pageActionBorder solid @colorGray12;
 	padding: 0.5em 0;
 
 	li {