How to adapt the background image of the web page to the screen? Solve_html/css_WEB-ITnose

I am making an interface for registration, etc., and want to use a picture as the background of the web page, but it does not seem to support stretch tiles
Apart from using js to determine the user size, is there any good way to solve this? question!
Wait for the master online to ask for advice and give you some ideas! thank U

Reply to discussion (solution)

css3 supports background scaling. http://www.html5cn.com.cn/css3/2013-04-21/267.html
Other methods, you can use a div, put a background inside, set the height and width to 100% to simulate the background.