.windows {
	max-width: 1440px;
	min-width: 1280px;
	position: relative;
	width: 100%;
	aspect-ratio: 1440/1399; /* 2560/1440=16/9，核心比例约束 */
	/* background: url('../img/windows1.png');
	background-repeat: no-repeat;
	background-size: 100% auto;  */
	min-width: 1280px;
	margin: 0 auto;
}