1.img label has no parent, directly to the img tag set width and height, the picture does not show up on ios.
Resolution: img tag added to the parent element to the parent element set width and height, and Img tag 100%; may be directly set as the background image in FIG.
The height of the positioning elements provided 2.fixed 100%, the height of the pop-up keyboard is incorrect in ios.
Solution: The fixed positioning changed position positioning.