diff --git a/public/stylesheets/application.css b/public/stylesheets/application.css
index b8fe94678..e2261b060 100644
--- a/public/stylesheets/application.css
+++ b/public/stylesheets/application.css
@@ -515,15 +515,16 @@ p.pourcent {font-size: 80%;}
 p.progress-info {clear: left; font-style: italic; font-size: 80%;}
 
 /***** Tabs *****/
-#content .tabs {height: 2.6em; border-bottom: 1px solid #bbbbbb; margin-bottom:1.2em; position:relative; overflow:hidden;}
-#content .tabs ul {margin:0; position:absolute; bottom:-2px; padding-left:1em; width: 2000px;}
-#content .tabs>ul { bottom:-1px; } /* others */
+#content .tabs {height: 2.6em; margin-bottom:1.2em; position:relative; overflow:hidden;}
+#content .tabs ul {margin:0; position:absolute; bottom:0; padding-left:1em; width: 2000px; border-bottom: 1px solid #bbbbbb;}
 #content .tabs ul li {
 float:left;
 list-style-type:none;
 white-space:nowrap;
 margin-right:8px;
 background:#fff;
+position:relative;
+margin-bottom:-1px;
 }
 #content .tabs ul li a{
 display:block;
@@ -553,7 +554,7 @@ border-bottom: 1px solid #fff;
 background-color: #fff;
 }
 
-div.tabs-buttons { position:absolute; right: 0; width: 48px; height: 24px; background: white; bottom: -1px;  }
+div.tabs-buttons { position:absolute; right: 0; width: 48px; height: 24px; background: white; bottom: 0; border-bottom: 1px solid #bbbbbb; }
 
 button.tab-left, button.tab-right {
 	font-size: 0.9em;
@@ -564,18 +565,17 @@ button.tab-left, button.tab-right {
 	position:absolute;
 	padding:4px;
 	width: 20px;
+	bottom: -1px;
 }
 
 button.tab-left {
 	right: 20px;
-	bottom: 0;
 	background: #eeeeee url(../images/bullet_arrow_left.png) no-repeat 50% 50%;
 }
 
 button.tab-right {
 	right: 0;
-	bottom: 0;
-	background: #eeeeee url(../images/bullet_arrow_right.png) no-repeat 50% 50%;}
+	background: #eeeeee url(../images/bullet_arrow_right.png) no-repeat 50% 50%;
 }
 
 /***** Auto-complete *****/