Sal elements on unsupported browsers are completely invisible

[b2hinkle]

The expected behavior for unsupported browsers is that I should still be able to see elements which have the data-sal attribute (but they won't animate of course). The reason it's invisible for unsupported browsers is because the start of the animation has an opacity of 0, and the animation never ends up playing since the browser doesn't support IntersectionObserver. I actually fixed the problem in my website by making a wrapper script for SAL, which looks for elements that have the attribute data-sal-wrapper. My js then dynamically adds data-sal attribute to the elements via the update() method of SAL.

So the reason why it works now is because I am no longer setting the data-sal attribute at compile time and instead am setting it dynamically.