h2 "What's your operating system?"
div(class: "os-button") do
  simple_link "macintosh" do
    img src: "/img/macface.jpg"
    h3 "Macintosh"
  end
end
div(class: "os-button") do
  simple_link "windows" do
    img src: "/img/windows.png"
    h3 "Windows"
  end
end
div(class: "os-button") do
  simple_link "linux" do
    img src: "/img/tux-trans.png"
    h3 "Linux"
  end
end