The Zombie: Using .id, #class, .element, #element, id or class as selectors
Always a Zombie? Yes
Severity: High.
Why is it a Zombie: Elements, classes, and ids are not selected by the selectors.
Cure the Zombie by: Always use a # for ids, a . for classes and no identifying character for elements e.g.
p { color: red; }
.class-name { color: green; }
#id-name { color: blue; }