MaximeRou

Thank a lot Zach, for your tips and for you quick answer !

Hello everyone, I'm doing an animation with a big overlay on page so I'm using the timeline of TimelineMax but I have issue when I'm using .className. To be brief, when I'm using className, it remove all classes on my element and I don't understand why it overwrite it all. Should I write it differently to keep existing classes ? Or is it possible to add an overwriting setting for .className ? This is a codePen that I simplify to troubleshoot : https://codepen.io/FrenchCooder/pen/ZEQpWJe Thanks in advance