HTML动态配置Rem

		const configureRem = (doc = documnet, win = window, size = 375) => {
			const docEl = doc.documentElement;
			const mode = 'orientationchange' in window ? 'orientationchange' : 'resize'; // 
			const getRem = () => {
				const width = docEl.clientWidth; // 屏幕像素
				let rem = width / size * 100;
				docEl.style.fontSize = rem + 'px'; // 初次设定
				const realSize = () => {
					const vnode = document.createElement('div');
					vnode.style.cssText = 'width: 1rem';
					document.body.append(vnode);
					const realWidth = getComputedStyle(vnode, null).getPropertyValue('width').replace('px', '');
					vnode.remove();
					return realWidth;
				}
				const vnodeWidth = realSize();
				if (rem != vnodeWidth) {
					rem = rem / vnodeWidth;
					docEl.style.fontSize = rem * 100 + 'px';
				}
			}
			win.addEventListener(mode, getRem, false);
			doc.addEventListener('ready', getRem, false);
			!doc.addEventListener ? null : getRem();
		}