Solutions to some common CSS questions on SO:

1. Keeping a Relative Footer at the bottom of page (Dynamic Footer Height) (CodePen)
2. Keeping a Fixed Footer at the bottom of page (Dynamic Footer Height) (CodePen)
3. Horizontal Alignment (Arbitrary Elements) (CodePen)
4. Horizontal Alignment (Text Elements) (CodePen)
5. Vertical Alignment (Arbitrary Elements) (CodePen)
6. Vertical Alignment (Text Elements) (CodePen)
7. Visualising the Box-Model (CodePen)
8. Removing the "white space" between Inline Elements (CodePen)