diff --git a/addons/web/static/src/css/base.css b/addons/web/static/src/css/base.css
index 908d407380c..02a5c155476 100644
--- a/addons/web/static/src/css/base.css
+++ b/addons/web/static/src/css/base.css
@@ -2001,7 +2001,6 @@
   padding-left: 24px;
   margin: 0;
   position: relative;
-  z-index: 10;
 }
 .openerp ul.oe_form_steps li .arrow, .openerp ul.oe_form_steps_clickable li .arrow {
   width: 17px;
@@ -2012,7 +2011,6 @@
 }
 .openerp ul.oe_form_steps li .arrow span, .openerp ul.oe_form_steps_clickable li .arrow span {
   position: relative;
-  z-index: 11;
   width: 24px;
   height: 24px;
   display: inline-block;
diff --git a/addons/web/static/src/css/base.sass b/addons/web/static/src/css/base.sass
index 52d54de3fbb..d3a04be28b8 100644
--- a/addons/web/static/src/css/base.sass
+++ b/addons/web/static/src/css/base.sass
@@ -1554,7 +1554,6 @@ $sheet-max-width: 860px
                 padding-left: 24px
                 margin: 0
                 position: relative
-                z-index: 10
             .arrow
                 width: 17px
                 display: inline-block
@@ -1563,7 +1562,6 @@ $sheet-max-width: 860px
                 margin-left: -5px
                 span 
                     position: relative
-                    z-index: 11
                     width: 24px
                     height: 24px
                     display: inline-block