Often times, websites devote a non-trivial amount of css to setting font-size. They declare an unnecessary amount of different font-sizes that upon inspection, don’t come close to resembling a sane type scale.

Line-height affects how easy it is to read a piece of text, so having a well constructed set of values can help make your text easier to read, increasing the chances that people will read it.

Shuffle isn’t just a monolithic template. It’s a big collection of sections that can be mixed and matched or used independently. Use what you need. Leave the rest.