diff --git a/core/modules/system/system.theme.css b/core/modules/system/system.theme.css
index d5f41e1..09c1291 100644
--- a/core/modules/system/system.theme.css
+++ b/core/modules/system/system.theme.css
@@ -325,7 +325,7 @@ ul.primary {
   list-style: none;
   margin: 5px;
   padding: 0 0 0 1em; /* LTR */
-  white-space: nowrap;
+  white-space: normal;
 }
 ul.primary li {
   display: inline;
diff --git a/core/themes/seven/style.css b/core/themes/seven/style.css
index 09e6b35..9c126d8 100644
--- a/core/themes/seven/style.css
+++ b/core/themes/seven/style.css
@@ -257,7 +257,6 @@ ul.primary {
   border-bottom: none;
   text-transform: uppercase;
   font-size: 0.923em;
-  height: 2.60em;
   margin: 0;
   padding-top: 0;
 }