.dialog {
	top:0;
	left:0;
	right:0;
	bottom:0;
	color:gray;
	position:fixed;
	margin:20px auto;
	line-height:60px;
	transition:all 0.5s;
	text-align:center;
	border-radius:5px;
	border:1px solid #e0e0e0;
	box-shadow:0 0 6px 0 #000;
	opacity:0;
}
.dialog::before,.dialog::after {
	content:'';
	position:absolute;
	width:50px;
	height:50px;
	background-size:cover;
	top:5px;
	left:5px;
}
/*在下面url里面可以自定义添加图标，因为上传的时候我不知道怎么传图片*/
    .dialog[type="success"]::before {
	background-image:url("./image/success.png");
}
.dialog[type="error"]::before {
	background-image:url("./image/error.png");
}
.dialog[type="tip"]::before {
	background-image:url("./image/tip.png");
}