css update

git-svn-id: https://plugins.svn.wordpress.org/yop-poll/trunk@851596 b8457f37-d9ea-0310-8a92-e5e31aec5664
css update

git-svn-id: https://plugins.svn.wordpress.org/yop-poll/trunk@851598 b8457f37-d9ea-0310-8a92-e5e31aec5664