Bootstrap 4 .border-warning class

Use the border-warning class in Bootstrap to set orange border to an element.

To add orange border, set the div as −

<div class="mystyle border border-warning">
  Warning (Orange border)

You can try to run the following code to implement the border-warning 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>
    .new {
      width: 200px;
      height: 150px;
      margin: 10px;

<div class="container">
  <p>The following is a Rectangle:</p>
  <div class="new border border-warning">Warning (Orange border)</div>


Updated on: 16-Jun-2020


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