body {
	color: #fff;
	background: linear-gradient(-45deg, #231f6e, #20bdfe, #2600b4, #1d1a44);
	background-size: 400% 400%;
	animation: gradientBG 15s ease infinite;
	margin: 0;
}
@keyframes gradientBG {
	0% {background-position: 0% 50%;}
	50% {background-position: 100% 50%;}
	100% {background-position: 0% 50%;}
}
.web{position: relative;width: 100%;height: 100vh;}
.loginBox {width: 420px;height: 406px;background:#105372;overflow: hidden; position: relative;top:50%;left:50%;margin: -203px 0 0 -210px;}
.loginBox h1 {
	color: #fff;
	text-align: center;
	font-weight: bold;
	font-size: 26px;
	margin-top: 60px;
	letter-spacing: 7px;
	margin-bottom: 20px
}
.loginBox .item {
	width: 300px;
	height: 45px;
	margin-left: 55px;
	border: 1px solid #1d90c5;
	margin-bottom: 10px;
	background: rgba(11,116,180,0.8);
	display: flex
}
.loginBox .item .icon {
	float: left;
	width: 45px;
}
.loginBox .item .icon img {
	display: block;
	width: 20px;
	margin: 12px;
}
.loginBox .item .txt {
	flex: 1;
}
.loginBox .item .txt input {
	border: 0;
	background: none;
	outline: none;
	width: 100%;
	height: 45px;
	line-height: 45px;
	color: #fff;
	letter-spacing: 1px;
	font-size: 14px
}
.loginBox .item .yzm {
	float: right;
	width: 100px;
	overflow: hidden;
	padding-left: 10px
}
.loginBox .item .yzm img {
	display: block;
	width: 100px;
	height: 45px;
}
.loginBox .item .txt input:-moz-placeholder { /* Mozilla Firefox 4 to 18 */
 color: #fff;
opacity:1;
}

.loginBox .item .txt input:-moz-placeholder { /* Mozilla Firefox 19+ */
 color: #fff;
opacity:1;
}
.loginBox .item .txt input:-ms-input-placeholder {
 color: #fff;
opacity:1;
}
.loginBox .item .txt input::-webkit-input-placeholder {
 color: #fff;
opacity:1;
}
.loginBox .item_2 {
	width: 300px;
	margin-left: 55px;
	overflow: hidden;
	padding-bottom: 20px
}
.loginBox .item_2 a {
	float: right;
	color: #fff;
	font-size: 12px
}
.loginBox .item_2 input {
	float: left;
}
.loginBox .item_2 span {
	float: left;
	color: #fff;
	font-size: 12px
}
.loginBox .item_3 {
	width: 300px;
	margin-left: 55px;
	overflow: hidden
}
.loginBox .item_3 .btn {
	width: 300px;
	height: 45px;
	background: #3FB5E3;
	border: 0;
	outline: none;
	text-align: center;
	line-height: 45px;
	color: #fff;
	letter-spacing: 2px;
	font-size: 16px;
	font-weight: bold;
	border: 1px solid #1d90c5;
	margin-bottom: 10px;
	cursor: pointer
}
input[type=checkbox] {
	margin-right: 5px;
	cursor: pointer;
	font-size: 14px;
	width: 11px;
	height: 10px;
	position: relative;
}
input[type=checkbox]:after {
	position: absolute;
	width: 6px;
	height: 13px;
	top: 0;
	content: " ";
	background: rgba(11,116,180,1);
	border: 1px solid #1d90c5;
	color: #fff;
	display: inline-block;
	visibility: visible;
	padding: 0px 3px;
	border-radius: 3px;
}
input[type=checkbox]:checked:after {
	content: "✓";
	font-size: 12px;
}