Class selector
Since: UXP v3.0
See: https://developer.mozilla.org/en-US/docs/Web/CSS/Class_selectors
Example
Copied to your clipboard1sp-action-button.icon-only {2 padding: 0;3}
Since: UXP v3.0
See: https://developer.mozilla.org/en-US/docs/Web/CSS/Class_selectors
Example
Copied to your clipboard1sp-action-button.icon-only {2 padding: 0;3}