Bootstrap - Opacity

This chapter discusses about the opacity of elements. The opacity property in CSS determines the transparency of an element.

Bootstrap provides a set of predefined opacity classes for convenience, allowing you to easily apply different levels of transparency to elements. These classes are named opacity-{value}, where {value} can be a number from 0 to 100.

Let us see an example:

Example

You can edit and try running this code using the Edit & Run option.

<!DOCTYPE html>
<html>
  <head>
    <title>Bootstrap - Opacity</title>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css" rel="stylesheet">
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.bundle.min.js"></script>
  </head>
  <body>
    <div class="container text-center m-3 p-3">
     <h3>Opacity</h3>
     <div class="opacity-0 pb-3 bg-primary border border-dark">
      <p class="text-center text-dark display-6">5</p></div>
      <p>opacity-0 will not display the text</p>
     <div class="opacity-25 pb-3 bg-primary border border-dark">
       <p class="text-center text-dark display-6">25</p></div>
     <div class="opacity-50 pb-3 bg-primary border border-dark">
      <p class="text-center text-dark display-6">50</p></div>
     <div class="opacity-75 pb-3 bg-primary border border-dark">
      <p class="text-center text-dark display-6">75</p></div>
     <div class="opacity-100 pb-3 bg-primary border border-dark">
      <p class="text-center text-dark display-6">100</p></div>
    </div>
  </body>
</html>
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