I am new to WordPress and am working to set up some pages. I started by using the visual editor. Everything looked good in the backend but extra spacing showed up on the live site. I then went into the code and tried to fix the extra spaces there. Again, same problem.
I then tried to insert simple horizontal rules using HTML <hr/> and the line showed up in the backend. No luck on the front end. The line does not even appear in Firefox or Safari. It's as if it is not even reading the HTML.
I read in another forum post that turning off the visual editor would help. I tried this. No luck.
Try making a brand new post with just the html editor. Your other posts' code may be far too messed up from switching back and forth between the visual and html editors. Also make sure that you are closing any tags that you yourself add:
http://codex.wordpress.org/HTML_to_XHTML
Spacing problems may be due to your theme's css, some themes have too much or too little space between paragraphs and/or other page elements. Try a different theme and see if things are spaced a little better with it.
This solved the spacing problem, but, as it is, the horizontal rule is still not reading. I'll keep playing. Thanks for your help.