diff --git a/addons/web/static/src/css/base.css b/addons/web/static/src/css/base.css
index 17b65ae91be..ad9cd84cb56 100644
--- a/addons/web/static/src/css/base.css
+++ b/addons/web/static/src/css/base.css
@@ -2060,10 +2060,11 @@
   padding-bottom: 0;
 }
 .openerp .oe_form div.oe_chatter {
+  box-sizing: border-box;
   min-width: 682px;
   max-width: 892px;
   margin: 0 auto;
-  padding: 16px 0 48px;
+  padding: 16px 16px 48px;
 }
 .openerp .oe_form div.oe_form_configuration p, .openerp .oe_form div.oe_form_configuration ul, .openerp .oe_form div.oe_form_configuration ol {
   color: #aaaaaa;
diff --git a/addons/web/static/src/css/base.sass b/addons/web/static/src/css/base.sass
index 15e1898883d..6691040b443 100644
--- a/addons/web/static/src/css/base.sass
+++ b/addons/web/static/src/css/base.sass
@@ -1636,10 +1636,11 @@ $sheet-padding: 16px
                 width: 400px
                 padding-bottom: 0
         div.oe_chatter
+            box-sizing: border-box 
             min-width: $sheet-min-width + 2* $sheet-padding
             max-width: $sheet-max-width + 2* $sheet-padding
             margin: 0 auto
-            padding: 16px 0 48px
+            padding: 16px 16px 48px
         div.oe_form_configuration
             p, ul, ol
                 color: #aaa