Problem:
When users register for a site, they are usually just registering to comment on a page. This means they DO NOT need the admin bar at the top hiding a portion of your page.
Solution:
To get rid of this you can add this to your functions page:
// show admin bar only for admins and editors if (!current_user_can('edit_posts')) { add_filter('show_admin_bar', '__return_false'); }
More solutions can be found here: