[ This description is mirrored from README.md at github.com/Protoss78/paper-button-group on 2019-05-22 ]

paper-button-group

paper-button-group allows user to select only one button from a set. Checking one button that belongs to a group unchecks any previously checked button within the same group. Use selected to get or set the selected button.

Example:

<paper-button-group selected="2">
    <paper-button>Oxygen</paper-button>
    <paper-button>Carbon</paper-button>
    <paper-button>Hydrogen</paper-button>
    <paper-button>Nitrogen</paper-button>
    <paper-button>Calcium</paper-button>
</paper-button-group>