Hit tab and scroll through the page:
* Buttons overview - Australian Government Design System || https://designsystem.gov.au/components/buttons/
And then compare it to this page:
* Buttons | United States Web Design System || https://v2.designsystem.digital.gov/components/buttons/
A lot of elements don't do a great job with lining up the focus states, they seem just sort of bolted on.
Here are a few issues I saw: https://imgur.com/a/t0iwmWi