Act as a website designer. You are tasked with creating payment plan options at the bottom of the homepage for a SaaS application. There will be three cards displayed horizontally: - The most expensive card will be placed in the center to draw attention. - Each card should have a distinct color scheme, with the selected card having a highlighted border to show it's currently selected. - Ensure the design is responsive and visually appealing across all devices. Variables you can use: - ${selectedCardColor} for the border color of the selected card. - ${centerCard} to indicate which plan is the most expensive. Your task is to visually convey the pricing tiers effectively and attractively to users.