The background is suitable for the highest resolution of 1920x1080 pixles and is fixed. The website slides over the background.
There is also a demo:
¡¡¡ This is a free extension.
Help orphans (6 - 15 years) in Northern Thailand !!!
We are supporting them with offering English lessons and learning materials.
Help us, giving these orphans a (better) future.
Please donate any amount to our PayPal account: firstname.lastname@example.org
Please mark your transfer as: DONATION