I mean that the code adheres to the HTML 4.0 standard, and will pass verification at the W3C and WDG validators. Unfortunately, there are some things that cannot be done with valid code.
Some people like to include a heading in their lists, placed right over the first list item.
The heading is indented like the list item, and there's only a single space between the heading and the first line. Top Valid Headings Font Indentation Unindentation Images Bottom Indentation HTML does not provide a tag for indenting. Some people use a UL or OL without any LI tags to accomplish indentation, like I've done here. Some people use a UL or OL without any LI tags to accomplish indentation, like I've done here. This is definitely not valid HTML, although most browsers will let you get away with it.