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<!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="/lib/bootstrap.min.css"> <script src="/lib/jquery-1.12.2.min.js"></script> <script src="/lib/bootstrap.min.js"></script> </head> <body> <div class="container"> <h2>Help text</h2> <p>Use the .help-block class to add a block level help text in forms:</p> <form role="form"> <div class="form-group"> <label for="pwd">Password:</label> <input type="password" class="form-control" id="pwd" placeholder="Enter password"> <span class="help-block">This is some help text that breaks onto a new line and may extend more than one line.</span> </div> <button type="submit" class="btn btn-default">Submit</button> </form> </div> </body> </html>