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Answer» In Bootstrap forms, you can add a block level help text USING help-block class.
Let us see an example: <!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://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 class="container">
<h2>Example of Help text</h2>
<form>
<div class="form-group">
<label for="pwd">Team Name:</label>
<input type="text" class="form-control" id="pwd" placeholder="ENTER team name">
<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>The output:
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