This is a normal button with no CSS sizing,
on Windows this sizes to 66x27:
On Windows this should be sizing to 84x24
here is a div that emulates it:
Press Me
200px wide
This button should be 200x60
100x21
This button should be 100x21
This button should be 100x21
200px wide
This button should be 200x60
Press Me
100x21
This button should be 100x21
Press Me with Really long title
This button should be 100x21
Presssssssssssssssssssssssssss