.ex1 {
	display: block;
	justify-content: space-between;
}
.ex1 div {
	display: flex;
	justify-content: center;
	align-items: center;
	width: 1024px;
	height: auto;
	line-height:0px;
	background-color: #e45151;
}
.scroll_bg {
	display: block;
	height: auto;
	width: 1024px;
	margin-right: auto;
	margin-left: auto;
}