Card does not work offline

[molly200]

Love the card! Card works well if the HA is connected to internet. It disappears with a “Custom element doesn’t exist” error, when internet is not available or HA is offline. It seems that the card is dependent on the /unpkg.com/@polymer/[email protected]/lit-element.js. I was wondering is this card can be made to work offline, with the existing HA lit-element, or the card-tools lit-element from thomasloven? Is there a chance to make this card work offline in the near future? Thanks