root = Card([question, form])
question = CardHeader("Where should we go for lunch on Friday?", "Cast your vote for the team lunch")
form = Form("lunch-poll", formActions, [restaurantField])
restaurantField = FormControl("Choose a restaurant", restaurantRadio, "Pick one and submit your vote")
restaurantRadio = RadioGroup("restaurant", [bellaNapoli, sakura, elPatio], "bella-napoli")
bellaNapoli = RadioItem("Bella Napoli", "Wood-fired pizza, fresh pasta, and classic Italian salads", "bella-napoli")
sakura = RadioItem("Sakura Sushi", "Daily lunch specials with fresh sashimi and rolls", "sakura")
elPatio = RadioItem("El Patio Tacos", "Street-style tacos, burritos, and homemade salsa", "el-patio")
formActions = Buttons([voteBtn])
voteBtn = Button("Submit vote", null, "primary")