Change the appearance of offcanvases with utilities to better match them to different contexts like dark navbars. Here we add `.text-bg-dark` to the `.offcanvas` and `.btn-close-white` to `.btn-close` for proper styling with a dark offcanvas. If you have dropdowns within, consider also adding `.dropdown-menu-dark` to `.dropdown-menu`.
{{< callout warning >}}
-Heads up! Dark variants for components were deprecated in v5.3.0 with the introduction of color modes. Instead of manually adding classes mentioned above, set `data-bs-theme="dark"` on the root element, a parent wrapper, or the component itself.
+**Heads up!** Dark variants for components were deprecated in v5.3.0 with the introduction of color modes. Instead of manually adding classes mentioned above, set `data-bs-theme="dark"` on the root element, a parent wrapper, or the component itself.
{{< /callout >}}
{{< example class="bd-example-offcanvas p-0 bg-body-secondary overflow-hidden" >}}
Stacks offer a shortcut for applying a number of flexbox properties to quickly and easily create layouts in Bootstrap. All credit for the concept and implementation goes to the open source [Pylon project](https://almonk.github.io/pylon/).
{{< callout warning >}}
-Heads up! Support for gap utilities with flexbox was recently added to Safari, so consider verifying your intended browser support. Grid layout should have no issues. [Read more](https://caniuse.com/flexbox-gap).
+**Heads up!** Support for gap utilities with flexbox was recently added to Safari, so consider verifying your intended browser support. Grid layout should have no issues. [Read more](https://caniuse.com/flexbox-gap).
{{< /callout >}}
## Vertical