更改 Bootstrap 输入组的大小

通过向 .input-group 本身添加相对表单大小类（如 .input-group-lg， input-group-sm， input-group-xs）来更改输入组的大小。

你可以尝试运行以下代码以更改 Bootstrap 中输入组的大小

示例

实时演示

<!DOCTYPE html>
<html>
   <head>
      <title>Bootstrap Example</title>
      <link rel = "stylesheet" href = "https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
      <script src = "https://ajax.googleapis.com/ajax/libs/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 style = "padding: 100px 100px 10px;">
         <form class = "bs-example bs-example-form" role = "form">
            <div class = "input-group input-group-lg">
            <span class = "input-group-addon">@</span>
            <input type = "text" class = "form-control" placeholder = "Twitterhandle">
         </div>
         <br>
         <div class = "input-group">
            <span class = "input-group-addon">@</span>
            <input type = "text" class = "form-control" placeholder = "Twitterhandle">
         </div>
         <br>
         <div class = "input-group input-group-sm">
            <span class = "input-group-addon">@</span>
            <input type = "text" class = "form-control" placeholder = "Twitterhandle">
         </div>
      </form>
   </body>
</html>

更新于： 12-Jun-2020

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