html5 & css3 for noobs

html5 questions

1. What are 3 new structural elements that html5 introduces?

2. What is the difference between an <aside> and a <section>?

3. What is the html5 doctype?

css3 questions

1. Should browser prefixes come before or after the non-prefixed property?

2. How would you select only the fifth child element?

3. Do websites need to look the same in every browser?