软件登录页

1.css外部样式、js框架的引入

<link rel="stylesheet" type="text/css" href="css/login.css"/>
<script type="text/javascript" src="js/jquery-3.3.1.min.js"></script>

2.html标签构成

div#div>img+div#div1

form>label*3>input^p

<div id="div">
	<img src="img/denglu_bg.jpg" alt="" style="width: 100%; height: 100%; z-index: -1;" />
	<div id="div1">
		<form action="">
			<label for="">
				用户名：<input type="text" class="text" />
			</label>
			<label for="">
				密&emsp;码：<input type="password" class="text" />
			</label>
			<label for="">
				验证码：<input type="text" size="4" maxlength="4" id="codetxt" />
				<img src="img/code.png" id="codeimg"/>
			</label>
			<p>
				<input type="submit" value="登录" class="btn1" />
				<input type="reset" value="重置" class="btn2" />
			</p>
		</form>
	</div>
</div>

3.编写样式

*{
	margin: 0;
	padding: 0;
}
body{
	font-size: 14px;
	font-family: "黑体";
	color: #0802A2;
}
#div{
	width: 100%;
	height: 100%;
	position: absolute;
	z-index: -1;
}
#div1{
	width: 416px;
	height: 250px;
	background-image: url(../img/login.jpg);
	position: absolute;
	top: 26%;
	left: 60%;
}
#div1 form{
	width: 300px;
	height: 150px;
	margin-top: 75px;
	margin-right: 0;
	margin-bottom: 0;
	margin-left: 15px;
}
#div1 form label{
	display: block;
	margin-top: 5px;
	margin-right: 0;
	margin-bottom: 10px;
	margin-left: 35px;
}
.text{
	width: 130px;
	height: 19px;
	line-height: 19px;
}
#codetxt{
	height: 19px;
	line-height: 19px;
}
#codeimg{
	position: relative;
	top: 8px;
	left: 3px;
	cursor: pointer;
}
#div1 form p{
	text-align: center;
}

.btn1, .btn2{
	width: 55px;	
	height: 28px;
	line-height: 28px;
	cursor: pointer;
	margin-top: 5px;
	margin-right: 0;
	margin-bottom: 0;
}
.btn1{
	margin-left: 6px;

}
.btn2{
	margin-left: 15px;
}