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Style Bootstrap 4 cards with bg-danger class
To color Bootstrap cards, we use the contextual classes.
For danger action, use the bg-danger contextual class with the card class −
<div class="card bg-danger"> <div class="card-body">Danger! High Voltage!</div> </div>
You can try to run the following code to implement the card-danger class −
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/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> </head> <body> <div class="container"> <h2>Messages</h2> <div class="card"> <div class="card-body">How you doing?</div> </div><br> <div class="card bg-danger"> <div class="card-body">Danger! High Voltage!</div> </div><br> </div> </body> </html>
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