*,*::before,*::after{
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}
.wave-box{
	width: 80%;
	height: 500px;
	background: url('https://www.jqueryscript.net/dummy/1.jpg');
	background-size: cover;
	margin: 100px auto;
	position: relative;
	overflow: hidden;
}