system-log-card: make a header & card-content similar to error-log-card

[ildar170975]

Breaking change

Proposed change

Fix alignment.

Before:

After:

Now it became similar to a condensed log:

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New feature (thank you!)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Example configuration

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue or discussion:
• Link to documentation pull request:

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

[wendevlin]

Thank you @ildar170975, good catch! I improved it a little bit for you.

[ildar170975]

@wendevlin
Shall I change paddings in error-log-card as well to 16px?