Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

CSS CSS Layout Techniques Flexbox Layout Animating Flexbox

Ehsan Raza
Ehsan Raza
263 Points
Posted by Ehsan Raza
Ehsan Raza
263 Points

data-icon vs Id

why do we use data-icon over Id's and why we use thier value with some strange characters. Where can i find out more about this 'data'-icon i cannot find anywhere about them. plz provide a useful link.

1 Answer

Sean T. Unwin
Sean T. Unwin
28,690 Points
Sean T. Unwin
Sean T. Unwin
28,690 Points

You really should not be using id's for CSS as it may affect re-usability and could prevent your CSS from being DRY.

Using data-icon is one method for using icon fonts that is easily recognizable if you are reading through HTML by using the HTML5 data- attribute. It is also easily accessible to use in CSS.

Here are two articles to help you understand: