Refactor website css

[zoombear]

Is your feature request related to a problem? Please describe.
Our css relies a bit on targeting ids and could use some refactoring. We might also want to get more semantic with how we name our classes. If someone wants to refactor our css a bit, maybe transition to SASS, and make things more concise...

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[moeenio]

If you don't use parts of issue template, remove them

[monika]

How do we feel about using BEM naming methodologies? It works really well with Sass in my experience. It's a great way to scope styling to specific modules that can be used on any page we'd like.

[zoombear]

@monika I've never used BEM but I think it's a great way to stay semantic! Let's go with BEM for the refactor