*{
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}
body{
	background: #3398db;
	padding: 40px;
}
.slider_wrap{
    margin: 0 auto;
    width: 600px;
}
.slider img{
	height: auto;
	width: 100%;
}

/*ad*/
.ad{
  margin: 100px auto;
  max-width: 1000px;
}