A colorful 3D sign that says "HAPPY EASTER" in bold, rounded letters. Each letter has a different bright color, with a soft white outline and decorated with small white polka dots, giving a cheerful Easter-themed appearance. The letters should have a slightly puffy, playful cartoon style with a glossy finish. Arrange the words in two lines: "HAPPY" on the top and "EASTER" below. Add a soft drop shadow or glow to make the letters pop, and ensure the overall look is festive and joyful.