.alert_windows {
	display: none;
	position: absolute;
	z-index: 1;
	width: 400px;
	height: 180px;
	background-color: #566F93;
	background-color: rgba(0, 0, 0, 0.3);
	border-top-left-radius: 8px;
	border-top-right-radius: 8px;
	border-bottom-right-radius: 8px;
	border-bottom-left-radius: 8px;
}

.alert_windows span {
	float: right;
	width: 30px;
	height: 30px;
	text-align: center;
	font: 15px/30px Microsoft Yahei;
	cursor: pointer;
	color: #333;
	background: lightblue;
	border-top-right-radius: 8px;
}

.alert_windows span:hover {
	color: #EEE;
	background: red;
}

img, span {
	vertical-align: middle;
}