Create a vintage advertisement poster for the Aperol Spritz. The poster should feature a bold, yellow title "Aperol" at the top. Below the title, depict a vibrant scene with a glass of Aperol in the foreground, complete with ice cubes and an orange slice garnish. In the background, illustrate a picturesque coastal setting with boats and buildings along the shore. Include text at the bottom that reads "One Part Aperol - One Part Cava - One Part Pellegrino."