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How can I customize Bootstrap tooltips to change their color and size?

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How can I customize Bootstrap tooltips to change their color and size?

Asked on Mar 16, 2026

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To customize Bootstrap tooltips, you can use custom CSS to change their color and size. Bootstrap tooltips are styled using the `.tooltip` class, and you can override these styles in your own stylesheet.

<!-- BEGIN COPY / PASTE -->
        <style>
            .custom-tooltip .tooltip-inner {
                background-color: #5a5a5a; /* Change background color */
                color: #ffffff;           /* Change text color */
                font-size: 1.2rem;       /* Change font size */
            }

            .custom-tooltip .arrow::before {
                border-top-color: #5a5a5a; /* Change arrow color */
            }
        </style>

        <button type="button" class="btn btn-secondary custom-tooltip" data-bs-toggle="tooltip" data-bs-placement="top" title="Custom tooltip">
            Hover me
        </button>

        <script>
            var tooltipTriggerList = [].slice.call(document.querySelectorAll('[data-bs-toggle="tooltip"]'))
            var tooltipList = tooltipTriggerList.map(function (tooltipTriggerEl) {
                return new bootstrap.Tooltip(tooltipTriggerEl)
            })
        </script>
        <!-- END COPY / PASTE -->

Additional Comment:

The `.custom-tooltip` class is added to the button to apply the custom styles only to specific tooltips.
The `.tooltip-inner` class is used to style the tooltip's content area.
The `.arrow::before` selector is used to change the color of the tooltip's arrow.
Ensure that your custom CSS is loaded after Bootstrap's CSS to override the default styles.

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How can I customize Bootstrap tooltips to change their color and size?

Asked on Mar 16, 2026

Answer

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