Hi, I was doing the codelab because I wanna use some overlays in a project I'm working on but I couldn't be able to end it because an error it's been generated.

I already created an issue for it at PolymerLabs/iron-overlay#5 but it will be helpful if you let me know how this work for you. I just clone the repo install the dependences and follow the lab, everything is right but steps 7 and 8.

Please check the error I already described at PolymerLabs/iron-overlay#5 and let me know if you can help me.

Thanks in advance, If you need any extra information I'll be here for it,
Cheers.

For the sake of curiosity, why the following wasn't considered

.custom-dialog[opened] {
  background: rgba(0, 0, 0, 0.1);
}

instead of

.content-wrapper {
  outline: 9999px solid rgba(0, 0, 0, 0.1);
}

Merely adding an additional 9 breaks the existing code which seems eccentric to say the least.

If outline is insisted on being used for a background purpose, how come a value such as 100vmax wasn't used instead to ensure no issues with finite values associated with the ultimate purpose of ensuring the entire viewport is considered to have a visual background that in fact always cover it?

It seemingly should have a comment nonetheless.