When adding line space to my posts and pages (IE: <div style="height:20px;"></div> ) I noticed that once you go from HTML view in the edit window, to Visual view and then back to HTML that line of code just vanishes from the the page.
I don't know why it seems to be just this line that is taken out. I have even un-checked the option under settings>writing> to have WP auto correct invalid XHTML code etc. But I don't see a problem with the syntax.
Could I be wrong?