Border Collapse

I am, for the most part, self taught when it comes to HTML and CSS. I’ve take a few courses to get a piece of paper that says I can do what I say I can do but learned very little from them.

I spotted this little CSS tidbit in a presenter’s code at the Web Directions North conference a few weeks ago and now I’m wondering if this is the sort of thing I missed out on by being self taught:

table
{
border-collapse: collapse;
}

There are quite a few tables I’ve designed where this would have been very useful.