each page has an empty space and different colors. There is no such problem on simulators and non-iphone x real machines.
means that there is an extra paragraph up and down on iphone x real machines
for example, there is an extra
in the picture box. 
solution: set up and down two div, to enter the page to determine that it is displayed when it is iPhone X, and hide when it is not iPhone X
isIphoneX:function(){
return /iphone/gi.test(navigator.userAgent) && (screen.height == 812 && screen.width == 375)
}