We just transferred our community from one that seems to have more HTML support with the TinyMCE editor, and I'm trying to reformat our existing articles on this new platform. What I'm hitting, is a lot of invalid HTML errors, even on simple things such as aligning h4 tags with the editor (which I'm unsure why the editor allows me to do it if it's invalid).   Is there some sort of HTML guide? I'm not doing anything crazy with my articles, just simple tables, heading tags, alignment, etc. and every time I save my articles I get some sort of error. It seems like this new platform isn't as robust as my old one, but I need to format my articles to look better so need to understand the parameters I'm working in.     ... View more