override func layoutSubviews() {
    sizeToFit()
    var sizeThatFits: CGSize = bounds.size
    sizeThatFits.width = UIScreen.main.bounds.size.width - popupSizeHorizontalMargin
    sizeThatFits.height = getStartedButton.frame.maxY + popupBottomMargin
    let newFrame = CGRect(x: popupOriginX, y: bounds.midY - sizeThatFits.height/2, width: sizeThatFits.width, height: sizeThatFits.height)
    frame = newFrame
}