html { 
  background-color: pink;
  border: yellow 1px solid; 
  margin: 2px; 
  padding: 2px; 
}

body { 
  background-color: "#FFFFFF";
  border: geen 1px solid; 
  font-family: sans-serif;
  margin: 2px; 
  padding: 2px; 
}

h1 { 
  text-align: center; 
}

mybutton { width: 50em; }