带Bootstrap的大型输入组
要使用Bootstrap设置大型输入组，请使用.input-group-lg类。
您可以尝试运行以下代码来实现.input-group-lg类-
示例
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap Example</title>
<link href = "/bootstrap/css/bootstrap.min.css" rel = "stylesheet">
<script src = "/scripts/jquery.min.js"></script>
<script src = "/bootstrap/js/bootstrap.min.js"></script>
</head>
<body>
<div class = "container">
<h1>Search</h1>
<form>
<div class = "input-group input-group-lg">
<input type = "text" class="form-control" placeholder = "Search here...">
<div class = "input-group-btn">
<button class = "btn btn-primary" type = "submit">
</button>
</div>
</div>
</form>
</div>
</body>
</html>