Custom label to be used by screen readers. When provided, an aria-label will be added to the element.
"a user friendly label for screen readers"How to align along the cross axis when contained in a Box or along the column axis when contained in a Grid.
"start""center""end""stretch"The amount of margin around the component. An object can be specified to distinguish horizontal margin, vertical margin, and margin on a particular side.
"xsmall""small""medium""large""xlarge"{
"vertical": "...",
"horizontal": "...",
"top": "...",
"bottom": "...",
"left": "...",
"right": "..."
}If the clock is running, this function will be called with the current time value each time it changes.
('2018-10-23T10:37:46') => {}Whether the clock should actively adjust time or be fixed to the time specified. 'backward' could be used as a countdown timer.
ISO8601 time or duration. For example: 'PT8H12M23S', 'T08:12:23', or '2015-02-22T08:12:23'. Any included date portion will be ignored for an analog clock. If not provided, the current browser time will be used.
"2018-10-23T10:37:45""T10:37:45""PT10H37M45S"