* {
	margin: 0;
	padding: 0;
}

img {
	display: block;
}

html,body {
	width: 100%;
	height: 100%;
}

.tips {
	height: 100%;
	background: rgba(0,0,0,0.7);
	position: relative;
	position: absolute;
	top: 0;
	width: 100%;
	z-index: 99;
}

.tips img:nth-child(1) {
	width: 180px;
	position: absolute;
	right: 20px;
	top: 20px;
}

.tips img:nth-child(2) {
	width: 230px;
	position: absolute;
	top: 200px;
	left: 50%;
	margin-left: -115px;
}