Login

 #canvas {
	box-shadow:0 0 10px #e4ffb8;
}
h1 {
	color:#4c1caa;
	text-align:t;
}
body {
	margin:0;
	padding:0;
	font-family:"montserrat";
	background-image:linear-gradient(125deg,#2c3e50,#27ae60,#2980b9,#e74c3c,#8e44ad);
	background-size:400%;
	animation:bganimation 15s infinite;
	text-shadow:2.5px 5px 0.3125rem royalblue;
	color:#8E44AD;
	font-size:sans-serif;
}
.box {
	width:300px;
	padding:40px;
	position:absolute;
	top:50%;
	left:50%;
	transform:translate(-50%,-50%);
	text-align:center;
}
.box h1 {
	color:greenyellow;
	text-transform:uppercase;
	font-weight:500;
}
.box input[type = "text"],.box input[type = "password"] {
	border:0;
	background:none;
	display:block;
	margin:20px auto;
	text-align:center;
	border:2px solid #3498db;
	padding:14px 10px;
	width:200px;
	outline:none;
	color:white;
	border-radius:24px;
	transition:0.25s;
}
.box input[type = "text"]:focus,.box input[type = "password"]:focus {
	width:280px;
	border-color:#2ecc71;
}
-webkit-input-placeholder {
	color:red;
	font-size:20px;
	line-height:50px;
}
.box input[type = "submit"] {
	border:0;
	background:none;
	display:block;
	margin:20px auto;
	text-align:center;
	border:2px solid #2ecc71;
	padding:14px 40px;
	outline:none;
	color:white;
	border-radius:24px;
	transition:0.25s;
	cursor:pointer;
}
.box input[type = "submit"]:hover {
	background:#2ecc71;
}
.text {
	color:white;
	text-align:center;
	text-transform:uppercase;
	margin:0px 0;
	//控制主背景高度
        	font-size:22px;
}
@keyframes bganimation {
	0% {
	background-position:0% 50%;
}
50% {
	background-position:100% 50%;
}
100% {
	background-position:0% 50%;
}
}