Bootstrap 4 Button .btn-outline-dark class

Use the .btn-outline-dark class in Bootstrap to set dark outline on a button.

The following is an example of a button with dark outline −

Set the above outline to the button, using the btn-outline-dark class as shown below −

<button type="button" class="btn btn-outline-dark">

You can try to run the following code to implement the btn-outline-dark class −


Live Demo

<!DOCTYPE html>
<html lang="en">
    <title>Bootstrap Example</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="">
    <script src=""></script>
    <script src=""></script>
  <div class="container">  
    <h4>Bootstrap 4</h4>
    <p>Learning  btn-outline-dark class usage:</p>
    <button type="button" class="btn btn-outline-dark">Submit</button>