attribute | unit | description | default value
--- | --- | --- | ---
container-background-color | color | inner element background color | n/a
css-class | string | class name, added to the root HTML element created | n/a
height | px | spacer height | 20px
padding | px | supports up to 4 parameters | none
padding-bottom | px | bottom offset | n/a
padding-left | px | left offset | n/a
padding-right | px | right offset | n/a
padding-top | px | top offset | n/a