How do you select all paragraphs with class="a" in css?

Choose CSS selector which selects all unvisited links

What is margin in CSS box model?

How to select direct child elements?

How do you define subscripted text? ( supply only tag name )

What tag is usually used to group elements? ( supply only tag name )

What does tag <area> do?

How do you comment a string in HTML document?

Where should attribute title be located?

What value of "type" attribute of <input> tag is used to define a single line text field?