The circular button component, prefixed by gds-circular-button, is used to style <button> tags. Note that all optional classes may be used in combination with each other, for example on a single element with gds-circular-button--success, gds-circular-button--lg, & gds-circular-button--block classes.
To indicate that a button is disabled, use the disabled="disabled" HTML attribute.
To make a button appear at block level at a specific breakpoint and below, use the breakpoint-specific block modifiers.