Mobile device Screen Scaling

This meta tag is added to the head of the Web Phone wap2.0 Web page, and the page will be displayed in its original size in the iphone's browser and does not allow zooming.   <  name= "Viewport"  content= "Width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no ">     width-viewport Width Height- Viewport height   Initial-scale-Initial scaling  Minimum-scale-The minimum scale that allows the user to zoom   Maximum-scale-The maximum scale  to allow the user to zoom User-scalable-whether the user can manually  scale