Specifies the size of the FloatingActionButton.
The possible values are:
xsmall—Applies the smallest available spacing and icon scale.small—Applies half of the default padding, e.g.8px.medium(Default)—Applies the default padding, e.g.16px.large—Applies one and one half of the default padding, e.g.24px.
Possible values:
"xsmall""small""medium""large"