大屏的计算scale适应当前电脑屏幕
屏幕1 ------------------standardWidth = 1920
屏幕2-----------------
let standardWidth = 2880
let standarHeight = 810
屏幕3-----------------------
let standardWidth = 5760
let standarHeight = 1620
屏幕1 ------------------standardWidth = 1920
屏幕2-----------------
let standardWidth = 2880
let standarHeight = 810
屏幕3-----------------------
let standardWidth = 5760
let standarHeight = 1620