To me, Twitter Bootstrap was important because it was the first time I added visual elements without having to hack the existing CSS. Most things I needed were

To me, Twitter Bootstrap was important because it was the first time I added visual elements without having to hack the existing CSS. Most things I needed were already generalized and well documented. Contrasting this to working on every one of the dozens of web projects I have been on. It was night and day. One was finding a kindred spirit and the other a train wreck. CSS is always the broken window code base of any project. TB was the first experience where it made enough sense that I didn't need to break more windows to get things to work.