Mobile page Viewable area

<meta content= "width=device-width; initial-scale=1.0; minimum-scale=1.0; maximum-scale=1.0 "name=" viewport ">

Content Property Value: width: Viewable range, value can be a number or keyword device-width height: same width Intial-scale: The first time the page is displayed is the zoom level of the viewable area, the Value 1.0 page     The face is displayed in actual size, without any scaling maximum-scale=1.0, minimum-scale=1.0; the zoom level of the viewable area, Maximum-scale the program that the user can enlarge the page, 1.0 disables the user from zooming in on the actual size. User-scalable: Whether the page can be scaled, no disables scaling

Mobile page Viewable area