> Portal Navigation: > > - Append `.md` to any URL under `https://dev.wix.com/docs/` to get its markdown version. > - Pages are either content pages (article or reference text) or menu pages (a list of links to child pages). > - To get a menu page, truncate any URL to a parent path and append `.md` (e.g. `https://dev.wix.com/docs/sdk.md`, `https://dev.wix.com/docs/sdk/core-modules.md`). > - Top-level index of all portals: https://dev.wix.com/docs/llms.txt > - Full concatenated docs: https://dev.wix.com/docs/llms-full.txt ## Resource: $w ## Namespace: hamburger-overlay ## Article: CSS Classes ## Article Link: https://dev.wix.com/docs/velo/velo-only-apis/$w/hamburger-overlay/css-classes.md ## Article Content: # Hamburger Overlay CSS Classes > This feature is only available to Wix Studio users. You can use the classes listed below to style your `HamburgerOverlay` elements with CSS. For more information on styling your elements with CSS, see [Styling Elements with CSS]($w/styling-elements-with-css) and the [MDN CSS reference docs](https://developer.mozilla.org/en-US/docs/Learn/CSS).
__Important:__ Element structure and undocumented class names may change without advance warning. To avoid unintended style changes to your site, select elements with the documented class names only.
## `.hamburger-overlay` Targets `hamburgerOverlay` element. For example: ```css .hamburger-overlay { background-color: #116dff; } ```