Is it possible for me to style every 3rd list item?
Currently in my 960px wide div I have list of boxes which are floated left and are displayed in a 3x3 grid view. They also have a margin-right of 30px, but because the 3rd 6th and 9th list item has this margin it makes them jump down a row making the grid display wrongly
How easy is to make the 3rd 6th and 9th not have the margin-right without having to give them a different class, or is that the only way to do it?
Yes, you can use what's known as :nth-child selectors.
In this case you would use:
li:nth-child(3n) {
// Styling for every third element here.
}
:nth-child(3n):
3(0) = 0
3(1) = 3
3(2) = 6
3(3) = 9
3(4) = 12
:nth-child() is compatible in Chrome, Firefox, and IE9+.
For a work around to use :nth-child() amongst other pseudo-classes/attribute selectors in IE6 through to IE8, see this link.
You can use the :nth-child selector for that
li:nth-child(3n) {
/* your rules here */
}
:nth-child is the answer you are looking for.
li:nth-child(3n+3)actually, since you want to exclude index 0. I'm surprised that the correct answer wasn't provided after five and a half years. Here is a JSFiddle