diff --git a/htdocs/theme/yellow/yellow.css b/htdocs/theme/yellow/yellow.css
index cd6aa667711..62a86444e79 100644
--- a/htdocs/theme/yellow/yellow.css
+++ b/htdocs/theme/yellow/yellow.css
@@ -132,13 +132,13 @@ tr.liste_titre
 tr.pair
 { 
   background: #dcdcb3; 
-  font-family: Helvetica, Verdana; font-size: 12px; 
+  font-family: Helvetica, Verdana; font-size: 1em; 
   }
 
 tr.impair	
 { 
   background: #eeeecc; 
-  font-family: Helvetica, Verdana; font-size: 12px; 
+  font-family: Helvetica, Verdana; font-size: 1em; 
   }
 /*
  *