Crate-docs-theme

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- Hide mobile nav toggle on desktop viewport

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- Improvements for mobile browsers

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- Remove topic div border

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- Add search results structure to jQuery function

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- Correct HTML structure for search results
- Minor style changes

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- Fixed the scroll jerk issue on the sidebar
- Updated the navbar to match the newer version on the website
- Expanded container layout to match newer design
- Added search documentation button to sidebar
- Improved styling of search results page
- Added custom.js and custom.css for easy front-end changes