A presentation with a brief overview about CSS Specificity and how to go about calculating it by myself, with a long list of references

1. CSS Specificity By Manu Goel

8. Specificity Hierarchy pre, :before, :after, :first-line, etc .class, [attribute], :active, :focus, etc #whatever style=“color: blue;” color: blue !important; Example 1 Elements, pseudo-elements 10 Classes, attributes, pseudo-classes 100 IDs 1000 Inline styles n/a (Highest) !important Specificity Category

9. Calculating Specificity element selector (1) Sith power (specificity): 0, 0, 1 class selector (10) Sith power (specificity): 0, 1, 0 id selector (100) Sith power (specificity): 1, 0, 0