A bootstrap well is something like a bootstrap panel with round borders and padding around it. This is used to create some attention towards some content of the webpage. The .well class adds a rounded border around the element with a gray background color and some padding. But we can change the text color and padding with the help of CSS.
Basic Well: The .well class are used to create basic well.
- Example:
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Wells</title>
<meta charset="utf-8">
<meta name="viewport"
content="width=device-width, initial-scale=1">
<link rel="stylesheet" href=
"https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
<script src=
"https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js">
</script>
<script src=
"https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js">
</script>
</head>
<body>
<div class="container">
<h1 align="center" style="color: green;">
GeeksforGeeks
</h1>
<h3 align="center">Bootstrap Wells</h3>
<!-- By default wells are medium in size -->
<div class="well">
This is a bootstrap well
</div>
</div>
</body>
</html>
- Output:

Small Well: The .well-sm after .well class is used to create a small-sized well. small wells are as follows:
- Example:
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Wells</title>
<meta charset="utf-8">
<meta name="viewport"
content="width=device-width, initial-scale=1">
<link rel="stylesheet" href=
"https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
<script src=
"https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js">
</script>
<script src=
"https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js">
</script>
</head>
<body>
<div class="container">
<h1 align="center" style="color: green;">
GeeksforGeeks
</h1>
<h3 align="center">Bootstrap Wells</h3>
<div class="well">
This is a bootstrap well(Default)
</div>
<div class="well well-sm">
This is a bootstrap well-sm
</div>
</div>
</body>
</html>
- Output:

Large Well: The .well-lg after .well class is used to create a small-sized well. Large wells are as follows:
- Example:
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Wells</title>
<meta charset="utf-8">
<meta name="viewport"
content="width=device-width, initial-scale=1">
<link rel="stylesheet" href=
"https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
<script src=
"https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js">
</script>
<script src=
"https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js">
</script>
</head>
<body>
<div class="container">
<h1 align="center" style="color: green;">
GeeksforGeeks
</h1>
<h3 align="center">Bootstrap Wells</h3>
<div class="well">
This is a bootstrap well(Default)
</div>
<div class="well well-lg">
This is a bootstrap well-lg
</div>
</div>
</body>
</html>
- Output:

Supported Browsers:
- Google Chrome
- Internet Explorer
- Firefox
- Opera
- Safari