Set a dark border to an element in Bootstrap


If you want to set a dark border to an element, use the border-dark class.

Spot the difference between a normal border and dark border −

To add a dark border, you need to simply add it like any other class in div as shown below −

<div class="myclass border border-dark">
  Dark Border
</div>

Above, the test is the CSS style, I have used to style my rectangle (div) −

.myclass {
  width: 150px;
  height: 150px;
  margin: 35px;
}

Let us see how to work with the border-dark class in Bootstrap 4 −

Example

Live Demo

<!DOCTYPE html>
<html>
  <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/4.1.0/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/4.1.0/js/bootstrap.min.js"></script>
    <style>
      .myclass {
         width: 150px;
         height: 150px;
         margin: 35px;
      }
    </style>
</head>
<body>

<div class="container">
  <p>Rectangles with normal and dark border:</p>
  <div class="myclass border">Normal Border</div>
  <div class="myclass border border-dark">Dark Border</div>
</div>
</body>
</html>

Updated on: 15-Jun-2020

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