由于您没有在其中提到 CSS 代码，我不明白 CSS 代码或 HTML 中的错误在哪里，这里是 HTML 和 CSS：
要调整输入字段的更改高度和宽度，
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>jayprakash</title>
<style>
.container {
width: 300px; /* Adjust the width of the container as needed */
margin: 0 auto; /* Center the container horizontally */
}
input[type="text"],
input[type="password"] {
width: 100%; /* Set the width of input fields to 100% of the container */
height: 40px; /* Adjust the height of input fields as needed */
font-size: 16px; /* Adjust the font size of input fields as needed */
margin-bottom: 10px; /* Add some space between input fields */
padding: 5px 10px; /* Add padding to input fields for better appearance */
box-sizing: border-box; /* Include padding and border in the width and height of input fields */
}
</style>
</head>
<body>
<div class="container">
<form action="#" method="post">
<input type="text" name="username" placeholder="Username" required>
<br>
<input type="password" name="password" placeholder="Password" required>
</form>
</div>
</body>
</html>