Spacer
An element that takes up space but does not display anything. It is usually used to place spacing within a container. If you don't specify that the spacer has a size or is flexible, the spacer does not occupy any space. If you want a small gap, consider using a separator instead.
Example:
<box>
<button label="Left"/>
<spacer flex="1"/>
<button label="Right"/>
</box>
Attributes:
Inherited from XUL Element:
Properties and Methods:
Inherited from XUL Element:
Inherited from Element: