In this layout, the main container is divided into two columns: a col-md-3 for the sidebar and a col-md-9 for the main content where the contests are displayed. The sidebar uses Bootstrap's list-group component to list links or items, which you can customize as needed. The main content area continues to use cards within a row, with each card representing a contest. You can further customize the sidebar and main content area with additional Bootstrap components or custom CSS to match the specific look and functionality you're aiming for.
Some quick example text to build on the contest title and make up the bulk of the card's content.
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