Labels
Button labels should be sentence case and as short as possible, while clearly explaining what will occur when the button is clicked. They should begin with a verb that describes the action and reference its object, such as “Save content” or “Delete comment.”

Accessibility

• Buttons should always have an accessible name.
  • For buttons that don’t include text, e.g., icon buttons, an accessible name can be provided through an aria-label or aria-labelledby attribute.
• Whenever possible, use native HTML button controls, <button> or <input type="button">.
  • When not using a native button control, the button role must be used instead to make role="button" to make it appear as one to a screen reader.