Glad to hear it’s all ok.
And, even if I had tried, the -5px would have raised no concerns with my noobiness, and even now, I have no idea why that caused the error.
In combination with the position:absolute property, bottom:-5px means, “put this element 5px below the bottom edge of the parent element”. So that’s why it was hiding a bit, and creating an extra 5px of space that would always be scrollable.
Even using the HTML tab (which I had never previously thought of doing) there are no warnings when I hover.
Why should the style property have used double quotes? I thought usage was entirely interchangable (unlike perl)?
Technically speaking, HTML attributes don’t need quotes at all unless they contain spaces. However, it is a convention (and “good practice”) to use double ones, because that is what is used in XML (and anything else causes errors in XML). Since HTML is a subset of SGML, which is XML-like, it makes sense to do so.
I have avoided using doctypes, since I figured that my GF gave me as much nagging as I needed. Nevertheless, at your urging I did add it (the strict version)
I suggest you read about Doctypes. This thread is a good place to start. The sticky The absence of one will put your document into quirks mode, which is unpredictable and renders the page using “wrong” rules. Adding a doctype puts browsers into “standards mode”.
it didn’t complain about anything, even the unclosed <p>.
What do you mean by “it” didn’t complain? This is where I suggest you put your HTML through the W3C validator. Technically speaking (again), the <p> element doesn’t need a closing tag. However, for consistency’s sake, readability and general robustness, it is recommendable to add one.
The HTML tab of firebug showed that the terminating </p> had been added anyway.
That is added only within Firebug. Firebug attempts to correct broken HTML or add missing ending tags. The HTML parser that actually turns HTML code into a web page does the same thing. Your visitors will still be receiving whatever HTML you have produced. Firebug only operates on your computer once the page has been downloaded!