As a user, I want a side navigation menu on the website to easily switch between different graphs and visualizations.

• Given a user is on the website, When they click on a label or icon in the side navigation menu, Then the main content area should immediately display the selected graph or visualization.

• Given a user is on the website, When they click on a label or icon in the side navigation menu, Then the selected item in the side navigation menu should be visually highlighted to indicate the active graph.

• Given a user is on the website and scrolls down the page, When they use the side navigation menu, Then the navigation menu should remain accessible and functional, allowing them to switch between graphs without needing to scroll back to the top of the page.