Button

Contained buttons are high-emphasis, distinguished by their use of elevation and fill. They contain actions that are primary to your app

Outlined buttons are medium-emphasis buttons. They contain actions that are important, but aren’t the primary action in an app.

Outlined buttons are also a lower emphasis alternative to contained buttons, or a higher emphasis alternative to text buttons.

Text buttons are typically used for less-pronounced actions, including those located in dialogs or in cards.

Fancy larger or smaller buttons? Use the size property.

Sometimes you might want to have icons for certain button to enhance the UX of the application as we recognize logos more easily than plain text. For example, if you have a delete button you can label it with a dustbin icon.

Icons are also appropriate for toggle buttons that allow a single choice to be selected or deselected, such as adding or removing a star to an item.