Ars Technica

In CSS, what's the difference between a .class, and an #id?

A class can be used more the once. You're not supposed to give multiple elements the same ID.
Ars Technica

CSS & ASP.NET (and differences between CSS id and class)

I'm trying to move to CSS only, however I have a couple of stumbling blocks to overcome. <BR><BR>First, what's the difference (advantages?) of using CSS id vs CSS class (#content vs .content for ...
TechRepublic

jQuery: How to get objects by ID, Class, Tag, and Attribute

jQuery: How to get objects by ID, Class, Tag, and Attribute Your email has been sent Ryan Boudreaux continues his tutorial on getting acquainted with jQuery by showing you how to get objects by ID and ...