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 Basics (2014) Enhancing the Design With CSS Text Shadows

Posted by yoav green
yoav green
8,611 Points

forgot whats the "alpha" role in the rgba. any one can remind?

up

2 Answers

Dima Mykhaylov
Dima Mykhaylov
19,379 Points

Alpha is the opacity or in other words how transparent the color is. The lower the value the more transparent it will be. So opacity 1 would be the normal color of the rgba and 0.1 opacity would make it very hard to see.

Samuel Morgan
Samuel Morgan
2,226 Points

To add to this, 1 is considered 100% or 'completely visible'. 0.5 would make it 50% transparent.

pat barosy
pat barosy
6,759 Points
pat barosy
pat barosy
6,759 Points

Exactly what Dima said.