Choosing the best front-end framework is often one of the hardest things a front-developer has to do. The choice is often backed up by a lot of research, but there is always second guessing.

1. Is your project responsive?

Developing a responsive front-end (or not) is a decisive part of any process in choosing the framework. Most of the high-profile frameworks often offer the choice between responsive and non-responsive development via an option that is very easy to edit.

2. CSS Preprocessors

CSS preprocessors take code written in the preprocessed language and then convert that code into the same old css we’ve been writing for years. 3 of the more popular css preprocessors are Sass, LESS, and Stylus.

Preprocessors offer more than variables of course. They can offer whatever they want as long as the resulting css file they produce works as ordinary css.

You don’t have to use a preprocessor, but you’ll find most people who use them for any length of time will insist they’ll never go back. They won’t give up all the extras the preprocessor offers as those extras allow them to write more flexible and maintainable css quicker than they could without.

Not all front-end frameworks offer the option of CSS Preprocessors, but at least the most popular ones do. And if not, if you're smart enough, you can just "hack" the fix.

3. It's all about Grids!

We're not talking about drawings here. Whenever a design is done for responsive development, it should take into consideration that the front-end developer will be using some kind of grid for the layout. The most popular ones are 8, 10 or 12 columns layouts.

Most of the CSS frameworks support either 2 of these layouts or all of them. Before choosing your framework, you should know what you're getting yourself into.

Most Popular CSS Frameworks: