清华大佬耗费三个月吐血整理的几百G的资源，免费分享！....>>>

.cloud_tip {
	position: relative;
	top: 20px;
	left: 20px;
	border: 2px solid #CD0000;
	background: #FFF;
	color: orange;
	padding: 3px;
	border-radius: 40%;
	-o-border-radius: 40%;
	-moz-border-radius: 40%;
	-webkit-border-radius: 40%;
	border-bottom-left-radius: 25%;
	-o-border-bottom-left-radius: 25%;
	-moz-border-bottom-left-radius: 25%;
	-webkit-border-bottom-left-radius: 25%;
	border-bottom-right-radius: 25%;
	-o-border-bottom-right-radius: 25%;
	-moz-border-bottom-right-radius: 25%;
	-webkit-border-bottom-right-radius: 25%;
	font-size: 11px;
	line-height: 11px;
	font-weight: bold;
	display: inline-block;
}
.cloud_tip:after {
	content: "";
	width: 12px;
	height: 12px;
	position: absolute;
	top: 6px;
	left: 3px;
	display: block;
	background: #CD0000;
	transform: rotate(50deg) skew(20deg,10deg);
	-o-transform: rotate(50deg) skew(20deg,10deg);
	-moz-transform: rotate(50deg) skew(20deg,10deg);
	-webkit-transform: rotate(50deg) skew(20deg,10deg);
	z-index: -1;
}