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CSSPlugin and height

marten test
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Warning: Please note

This thread was started before GSAP 3 was released. Some information, especially the syntax, may be out of date for GSAP 3. Please see the GSAP 3 migration guide and release notes for more information about how to update the code to GSAP 3's syntax. 

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I have a problem toggling the height of an object using the CSSPlugin. Transitioning by adding a class works, removing the class however does not result in the previous height.

.box {
  height: 50px;
  width: 50px;
  background: red; 
.active {
    height: 80px;
    background: blue;
var toggle = function () {
  var square = document.querySelector('.box');

  if (square.classList.contains("active")) {
    TweenMax.to(square, 1, {className:"-=active"});
  } else {
    TweenMax.to(square, 1, {className:"+=active"});

Or take a look at the codepen URL.


Any ideas?




See the Pen bNLbQQ by anon (@anon) on CodePen

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This is interesting.. look at this codepen demo, view in Chrome or Safari:


See the Pen yyvLKa by jonathan (@jonathan) on CodePen


You will notice that column 1 (blue box) height property will get overridden by -webkit-logical-height


The column 2 (green box) uses the regular height property due to having the !important declaration.


Looks like -webkit-logical-height will override the normal height property regardless of order in the CSS rule, also if it is inline.. unless the !important declaration is used.


Also looks like this might have to do with CSS3 Writing Modes






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