Bootstrap的小输入字段
使用.input-sm类在Bootstrap中设置小输入字段。
您可以尝试运行以下代码来实现.input-sm类：
示例
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap 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/3.3.7/css/bootstrap.min.css">
<script src = "https://cdn.staticfile.org/jquery/3.3.1/jquery.min.js"></script>
<script src = "https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>
<div class = "container">
<h2>Candidate Profile</h2>
<form>
<div class="form-group">
<label for="sel2">What is your job profile?</label>
<select class="form-control input-lg" id="sel2">
<option>Programmer</option>
<option>Web Developer</option>
<option>DBA</option>
<option>Support Engineer</option>
</select>
</div>
<div class="form-group">
<label for="sel3">Educational Qualification</label>
<select class="form-control input-sm" id="sel3">
<option>Undergraduate</option>
<option>Graduate</option>
<option>Post-Graduate</option>
</select>
</div>
</form>
</div>
</body>
</html>