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JavaScript Using jQuery Plugins Add a Sticky Navigation Bar Adding Sticky Navigation

Juan García
Juan García
10,723 Points

Selecting several CSS selectors without a comma

In the video Dave McFarland uses this bit of code

.is-sticky .header {
  background-color: black;

I assume that when we use two or more css selectors like that it means we are selecting elements that have BOTH classes, is that right?

Also, I can't find the teacher notes about transitions ; )

Thank you!

3 Answers

Mark Buckingham
Mark Buckingham
5,574 Points


In your example the css selector is looking for an element with the 'header' class within an element with the 'is-sticky' class. Adding a comma between them creates an OR condition and will apply to any element with either of the class names.


Juan García
Juan García
10,723 Points

That solves my doubt, thanks Mark!

Thanks Mark!