Libraries always are a trade-off between the flexibility of developing it yourself versus the time saved relying on other people's work. To me, it's less the si

Libraries always are a trade-off between the flexibility of developing it yourself versus the time saved relying on other people's work. To me, it's less the size of the code than the functionality that matters. Code size is not necessarily an indicator of how hard it is to solve a problem after all. In this case, however, we are talking about pretty basic CSS. There are some standards for page layout, but there is no One True Way to design a web page front end... all designs are different. Small CSS like this (as a library) in effect make design decisions for you and I don't think CSS is difficult enough for this to be justified. As an example (without manually editing the CSS at least, which defeats the point of the NPM / Bower installs), this grid CSS locks you in to arbitrary divisions of 12. What if your grid requires 5 evenly spaced columns? You can't do that.