Styling problem of heading in Edge

[srijken]

Description

The style on the heading part of the element isn't applied properly in MS Edge.

Expected outcome

Heading styles should be applied

Actual outcome

Heading styles are not applied

Live Demo

https://www.webcomponents.org/element/@polymer/paper-card/demo/demo/index.html

Steps to reproduce

Compare the demo in Chrome and Edge.
https://www.webcomponents.org/element/@polymer/paper-card/demo/demo/index.html
Problem is visible in the first demo. "Emmental" isn't in the yellow part of the card, and is missing margin and font size styles. Problem also shows up in the last demo: "Call Jennifer" has no styles applied.

Browsers Affected

• Chrome
• Firefox
• Safari 9
• Safari 8
• Safari 7
• Edge
• IE 11
• IE 10

[srijken]

I found out that this can be fixed by updating the dependencies to a later release than 3.0.0-pre.26. Do you want a PR for this, or is it simpler to just update package.json?