use a border instead of a margin and clip the background to the padding box so that...

diff --git a/LCARStrek/global/tabbox.css b/LCARStrek/global/tabbox.css
index 32f56e31e6356f30be7552c8f82cba0c9ce554a2..a35fcc2b38f312fdc8b59863eb73099bb43243b3 100644 (file)
--- a/LCARStrek/global/tabbox.css
+++ b/LCARStrek/global/tabbox.css
@@ -35,11 +35,12 @@ tabpanels {
 tab {
   border-radius: 8px 8px 0px 0px;
   margin-top: 2px;
-  -moz-margin-end: 2px;
+  -moz-border-end: 2px solid transparent;
   border-bottom: none;
   padding: 2px 4px 1px;
   background-color: #C09070;
   color: #000000;
+  background-clip: padding-box;
 }
 
 .tab-text {