.button-group
  %label
    %input{checked: "checked", name: "button-group", type: "radio", value: "item"}/
    %span.button-group-item Item
  %label
    %input{name: "button-group", type: "radio", value: "other-item"}/
    %span.button-group-item Other But Longer Item
  %label
    %input{name: "button-group", type: "radio", value: "other-item"}/
    %span.button-group-item Third
  %label
    %input{name: "button-group", type: "radio", value: "third"}/
    %span.button-group-item Last Item