1. Are you in Visual or Text editor? If you’re in a text editor, try switching to Visual editor and hit enter, it should appear in front.
2. Can you provide us URL for your website so that we can inspect it and give you a proper solution?
3. Try adding Biographical Info from Dashboard > All Users > Edit User.
4. Read this instruction or google it to turn off comments. http://www.wpbeginner.com/plugins/how-to-turn-off-or-disable-comments-in-wordpress-pages/
5. Add following code inside Appearance > Customize > Additional CSS :