Focus if you are practicing html as a beginner

1: Always Close Your Tags

Like: <li>Some text here. </li>
Not like: <li>Some text here.

2: Declare the Correct DocType

type 'html:5' then ctrl+e after you installed zen coding.

3: Never Use Inline Styles

Try to call external css, if you're in hurry make an internal css, otherwise it will harm you.