下面是一个简单的HTML登录界面的示例代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Login Page</title>
<style>
body {
font-family: Arial, sans-serif;
background-color: #f4f4f4;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
margin: 0;
}
.login-container {
width: 300px;
padding: 40px;
background-color: #fff;
border-radius: 5px;
box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}
input[type="text"], input[type="password"] {
width: 100%;
padding: 10px;
margin: 10px 0;
border: 1px solid #ccc;
border-radius: 4px;
}
input[type="submit"] {
width: 100%;
padding: 10px;
background-color: #5cb85c;
color: white;
border: none;
border-radius: 4px;
cursor: pointer;
}
input[type="submit"]:hover {
background-color: #4cae4c;
}
</style>
</head>
<body>
<div class="login-container">
<form action="/submit-your-login-form" method="post">
<div>
<label for="username">Username:</label>
<input type="text" id="username" name="username" required>
</div>
<div>
<label for="password">Password:</label>
<input type="password" id="password" name="password" required>
</div>
<div>
<input type="submit" value="Login">
</div>
</form>
</div>
</body>
</html>这段代码创建了一个简单的登录表单，你可以根据需要修改action属性的值以指定登录信息提交到的URL。同时，你可以添加额外的CSS样式来进一步美化登录界面。