html, body {
	height: 100%;
	margin: 0;
}
body{
	background-color:#2196F3;
	background-image:url('../images/login_bg.jpg');
	overflow:hidden;

	display: flex;
	justify-content: center;
	align-items: center;
}

.login-box{
	max-width:90%;
	width:400px;
	box-sizing: border-box;
	margin:0 auto;
	padding:1.5rem;
	background:rgba(255,255,255,0.8);
	box-shadow: 0 0 20px rgba(255, 255, 255, 0.6), /* 主外发光 */
				0 0 20px rgba(255, 255, 255, 0.4), /* 次外发光 */
				0 0 40px rgba(255, 255, 255, 0.2);  /* 远离中心的外发光 */
	border-radius:12px;
}
.login-box .title{
	text-align:center;
	margin-bottom:1rem;
}
.login-box .title h2{
	text-align:center;
	font-size:1.8rem;
    letter-spacing:1px;
	color:#1F4E79;
	line-height:1;
	margin-bottom:0.5rem;
}
.login-box .title p{
    font-size:1rem;
	font-weight: normal;
    color:#333333;
	line-height:1.5;
}
.login-box a{
	color:#0284ee;
}
.login-box a:hover{
	text-decoration: underline;
}

.login-box #captcha{
	cursor: pointer;
}