先来看看样子。
html源码:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Login</title> <link rel="stylesheet" type="text/css" href="Login.css"/> </head> <body> <p id="login"> <h1>Login</h1> <form method="post"> <input type="text" required="required" placeholder="用户名" name="u"></input> <input type="password" required="required" placeholder="密码" name="p"></input> <button class="but" type="submit">登录</button> </form> </p> </body> </html>
css代码:
html{
width: 100%;
height: 100%;
overflow: hidden;
font-style: sans-serif;
}
body{
width: 100%;
height: 100%;
font-family: 'Open Sans',sans-serif;
margin: 0;
background-color: #4A374A;
}
#login{
position: absolute;
top: 50%;
left:50%;
margin: -150px 0 0 -150px;
width: 300px;
height: 300px;
}
#login h1{
color: #fff;
text-shadow:0 0 10px;
letter-spacing: 1px;
text-align: center;
}
h1{
font-size: 2em;
margin: 0.67em 0;
}
input{
width: 278px;
height: 18px;
margin-bottom: 10px;
outline: none;
padding: 10px;
font-size: 13px;
color: #fff;
text-shadow:1px 1px 1px;
border-top: 1px solid #312E3D;
border-left: 1px solid #312E3D;
border-right: 1px solid #312E3D;
border-bottom: 1px solid #56536A;
border-radius: 4px;
background-color: #2D2D3F;
}
.but{
width: 300px;
min-height: 20px;
display: block;
background-color: #4a77d4;
border: 1px solid #3762bc;
color: #fff;
padding: 9px 14px;
font-size: 15px;
line-height: normal;
border-radius: 5px;
margin: 0;
}总结
代码如下:
<input type="text" required="required" **placeholder="用户名"** name="u"></input> <input type="password" required="required" **placeholder="密码"** name="p"></input>
placeholder="用户名"的作用:占位符
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