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

Grouping selectors

I'm having a hard time understanding the CSS Foundations quiz question:

"When we group selectors, what happens if we place a comma after the last selector?"

Is this referring to the HTML or CSS pages?

Also, I'm not sure why there would even be a need to add a coma after the last selector.

Without a link to the quiz you are having issues with someone would have guess which one it is, to be able to double check their answer.

The post is referring to one of the questions in this quiz: http://teamtreehouse.com/library/css-foundations/selectors/grouping-and-modifying-selectors

1 Answer

It's referring to the CSS code. If you add a comma after the last rule, like this…

.volvo, .open, .ford, {
    border: 1px solid red;
}

…that entire code block will be ignored by the web browser, because the syntax is invalid. When grouping selectors, the last one should not have a comma after it. The correct answer is: “The entire rule gets ignored by the browser.”