root = Card([header, bioSection, messageForm])
header = CardHeader(personName, role)
bioSection = Card([TextContent(bioText)])
messageTextArea = TextArea("message", "Write a message...", 4)
sendBtn = Button("Send message", null, "primary", "normal", "medium")
messageButtons = Buttons([sendBtn])
messageField = FormControl("Message", messageTextArea)
messageForm = Form("msgForm", messageButtons, [messageField])
personName = "Alex Johnson"
role = "Senior Engineer"
bioText = "Alex is a senior engineer with 8 years of experience building scalable web applications. Passionate about open source and mentoring junior developers."