You're confusing my reference to DIVitis with my comment about layout in the HTML. The examples providied by the Bootstrap page are stuffed with unnecessary DIV

You're confusing my reference to DIVitis with my comment about layout in the HTML. The examples providied by the Bootstrap page are stuffed with unnecessary DIVs. I'm a web developer, so I know that DIVs exists to provide containers which add no semantic meaning to the page. But putting classes into your HTML which say class='row' or class='leftcolumn' means that you can't just change the CSS in order to change the layout - which is the whole purpose of CSS in the first place. All grid systems suffer from this weakness. Consider this example based on the Bootstrap examples - you have three boxes containing stuff within a DIV with a class of 'row'. At some point in the future you decide to turn this into a column. Easy to do in the CSS - just change the width to the with of one item, and they'll stack on top of each other. BUT, now you have a column labelled 'row' in your HTML. This is a fairly simple to rectify example, but this problem is pervasive in grid systems.