diff --git a/sphinx/style/default.css b/sphinx/style/default.css
index 2d5c429e1..724158274 100644
--- a/sphinx/style/default.css
+++ b/sphinx/style/default.css
@@ -589,8 +589,8 @@ div.admonition dt {
     font-weight: bold;
 }
 
-div.admonition dd {
-    margin-bottom: 10px;
+div.admonition dl {
+    margin-bottom: 0;
 }
 
 div.admonition p {
@@ -616,7 +616,6 @@ p.admonition-title {
     margin: 0px 10px 5px 0px;
     font-weight: bold;
     display: inline;
-    font-size: 1em;
 }
 
 table.docutils {
diff --git a/sphinx/web/application.py b/sphinx/web/application.py
index 4139f52c5..44ad7bab9 100644
--- a/sphinx/web/application.py
+++ b/sphinx/web/application.py
@@ -768,7 +768,7 @@ def _check_superuser(app):
             pw2 = getpass.getpass('Enter password again: ')
             if pw1 != pw2:
                 print 'Error: Passwords don\'t match.'
-                sys.exit(1)
+                raise SystemExit(1)
             app.userdb.set_password('admin', pw1)
             app.userdb.privileges['admin'].add('master')
             app.userdb.save()