Inspect CSS Styles With Bootstrap Popover CSS Inspector

A lightweight, Bootstrap-powered CSS Inspector that allows you to inspect an element’s CSS styles quickly.

When initialized, it pulls the element’s computed CSS styles and displays them in a clean Bootstrap popover. This makes inspecting styles quick and easy without developer tools.

How to use it:

1. Download and load the CSS Inspector’s script into your Bootstrap project.

<!-- Bootstrap is required -->
<link rel="stylesheet" href="/path/to/cdn/bootstrap.min.css" />
<script src="/path/to/cdn/bootstrap.bundle.min.js"></script>

<!-- Popover CSS Inspector -->
<script src="/path/to/js/popover-css-inspector.min.js"></script>

2. Add the data-bs-custom-class="popover-css-inspector" attribute to the element you want to inspect and the plugin will do the rest.

<button
  type="button"
  class="btn btn-primary btn-lg"
  data-bs-toggle="popover"
  data-bs-custom-class="popover-css-inspector">
  Example Button
</button>

3. By default this plugin will automatically inspect the following CSS properties of the element. You can hide specific CSS properties using the data-css-inspector-hide="PROPERTY NAME" attribute:

• animation-duration
• animation-name
• background-color
• border-radius
• border-width
• color
• font-size
• font-style
• font-weight
• height
• margin
• max-height
• max-width
• opacity
• padding
• text-align
• text-transform
• width

4. You can also add more CSS properties to the CSS inspector using the data-css-inspector-show="PROPERTY NAME" attribute:

• accent-color
• animation
• appearance
• aspect-ratio
• background-image
• background-position
• background-repeat
• background-size
• border
• border-bottom-color
• border-color
• border-left-width
• border-style
• box-shadow
• box-sizing
• color-scheme
• cursor
• display
• float
• font-family
• letter-spacing
• line-break
• line-height
• list-style
• margin-bottom
• margin-left
• margin-right
• margin-top
• min-height
• min-width
• overflow
• padding
• position
• text-align
• text-decoration
• text-indent
• text-shadow
• text-transform
• text-wrap
• transform
• transition
• user-select
• vertical-align
• white-space
• word-break
• word-spacing
• word-wrap
• z-index

Changelog:

04/12/2026

• Update

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