From my perspective as a designer (I make this disclaimer since I could be talking out of my ass), these CSS frameworks seem like an easier way to implement a g

From my perspective as a designer (I make this disclaimer since I could be talking out of my ass), these CSS frameworks seem like an easier way to implement a grid system in a web page. I don't have to define the width of the grid or gutters, I just specify how many columns per row I want. This makes the act of laying out content for me faster than having to code this from scratch.