我對 CAS 沒有任何想法，但您可以使用以下方式對齊您的表格，看看它是否適合您
將類添加form-container到表單的父 div 和
.form-container{
width: 300px;
margin: 0 auto;
float: none;
}
.form-container{
width: 300px;
margin: 0 auto;
float: none;
}
<!DOCTYPE html>
<html>
<head>
<title>Form Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<div class="form-container">
<h3>Vertical (basic) form</h3>
<form action="/action_page.php">
<div class="form-group">
<label for="email">Email:</label>
<input type="email" class="form-control" id="email" placeholder="Enter email" name="email">
</div>
<div class="form-group">
<label for="pwd">Password:</label>
<input type="password" class="form-control" id="pwd" placeholder="Enter password" name="pwd">
</div>
<div class="checkbox">
<label><input type="checkbox" name="remember"> Remember me</label>
</div>
<button type="submit" class="btn btn-default">Submit</button>
</form>
</div>
</div>
</body>
</html>
