bug(mdc-card): Negative margin on subtitle

[andrewseguin]

Is this a regression?

• Yes, this behavior used to work in the previous version

The previous version in which this bug was not present was

No response

Description

The card subtitle has a negative margin, causing it to run into the card title

Reproduction

https://stackblitz.com/edit/angular-wro35c-pjrlt2?file=src%2Fapp%2Fcard-subtitle-example.html

Expected Behavior

Should look more spaced

Actual Behavior

Shouldnt run into each other

Environment

• Angular:
• CDK/Material:
• Browser(s):
• Operating System (e.g. Windows, macOS, Ubuntu):

[andrewseguin]

Also, there is no padding between header and content, even though .mat-mdc-card-header says there should be top padding somewhere:

.mat-mdc-card-header {
  ...

  // Apply default padding for the header region. Omit any bottom padding because we assume
  // this region will be followed by another region that includes top padding.
  padding: $mat-card-default-padding $mat-card-default-padding 0;

  ...
}

[noobyogi0010]

Hey @amysorto
I would like to work on this issue if no one else has picked it up.
Thanks!