Div in viewport, append css

[barney0o0]

Hey, is there a method that after scroll and a div fills viewport, css can be updated, i.e.:

#div1, #div3
css .menu remove class, add class ‘dark’

#div2
css .menu remove class, add class ‘light’

i would love to google it, but i dont know what its called

[PaulOB]

Do you mean something like this?

We had a similar question a while ago that resulted in this codepen.

[m3g4p0p]

Here’s another jQuery plugin to accomplish this. No shortage, I suppose! ^^