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CSS Modular CSS with Sass Getting Modular with Mixins and Functions The Project Config File

Posted by Unsubscribed User
Unsubscribed User
11,601 Points

Why is he using underscore for is $base__font-size and not hyphen like that "base--font-size" at 08:41 minutes, Thanks

Is there any particular reason ?

2 Answers

David Moorhead
David Moorhead
18,005 Points
David Moorhead
David Moorhead
18,005 Points

Hello, maxime daraize,

Yes, there is a particular reason: The two underscores, as well as two hyphens, are part of BEM methodology. The syntax would look like this: 

.BLOCK{__ELEMENT[--MODIFIER]}

BEM stands for Block-Element-Modifier and is designed to help modularise frontend development by breaking everything into blocks containing elements, then using modifiers to tweak them.

If you wish to read a whole lot more about it, here's the page.

Hope that answers your "Why" question. :smile:

David