uniapp里background背景图自适应高度

	#container {
		// width: 100vw;
		// height: 100vh;
		// background: url(../../static/tjj_bg.png) no-repeat;
		// background-repeat: no-repeat;
		// background-size: 100% 100%;
		background-size: cover;
		box-sizing: border-box;
	}