I'm curious what the impact is of colspan in different browsers.
I have a table with a row acting as a heading which uses colspan to spread across all columns, and I might want to add columns in the future. If I simply make the colspan some really large number so that I can add columns without having to update the heading, does this have any negative impacts?
Will browsers behave badly and creating loads of dud columns, or should they be smart enough to limit this to how many columns the table actually has?