"#wrapper": {

  // Set wrapper to adjust it's size to it's contents
  width: Ti.UI.SIZE,
  height: Ti.UI.SIZE,

  // Set stuff like borders and backgrounds on the wrapper
  backgroundColor: "red"
}

"#content": {

  // Set content to anything but the default Ti.UI.FILL
  // For example a absolute (dp) or relative (%) value
  // Or again, set to adjust to it's content (the text)
  width: Ti.UI.SIZE,
  height: Ti.UI.SIZE,

  // Set the padding values like so:
  top: "10dp", right: "10dp", bottom: "10dp", left: "10dp",

  // Set stuff like color and font on the content
  color: "white"
}