matCardTitle overridden by h2 styles

[calebegg]

https://stackblitz.com/edit/angular-material2-issue-wjytux?file=app/app.component.html

I'd like to change my <mat-card-title> into <h2 matCardTitle>, for screenreader accessibility. But that overrides the styling. I think the styling for matCardTitle needs to be higher specificity.

(I can't use aria-level because it's not widely supported).

[jelbourn]

.mat-typography h2 is indeed overriding the card-title's specificity.