body {
            margin: 0;
            padding: 0;
            font-family: "Arial", sans-serif;
            background: linear-gradient(135deg, #f4f4f4, #580000);
            color: #333;
            overflow-x: hidden;
            overflow-y: scroll;
            min-height: 200vh;
        }

        #container {
            position: relative;
            width: 100%;
            height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        #cake-canvas {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            cursor: pointer;
            transition: all 1.5s ease-in-out;
        }

        #instructions {
            position: fixed;
            bottom: 10%;
            left: 50%;
            transform: translateX(-50%);
            font-size: 24px;
            color: #fff;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
            background-color: rgba(0, 0, 0, 0.2);
            padding: 10px 20px;
            border-radius: 10px;
            animation: pulse 2s infinite;
            z-index: 100;
            text-align: center;
        }

        @keyframes pulse {
            0% {
                transform: translateX(-50%) scale(1);
            }

            50% {
                transform: translateX(-50%) scale(1.05);
            }

            100% {
                transform: translateX(-50%) scale(1);
            }
        }

        #scroll-instruction {
            position: fixed;
            bottom: 10%;
            left: 50%;
            transform: translateX(-50%);
            font-size: 24px;
            color: #fff;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
            background-color: rgba(0, 0, 0, 0.2);
            padding: 10px 20px;
            border-radius: 10px;
            display: none;
            animation: pulse 2s infinite;
            z-index: 100;
        }

        #letter {
            position: fixed;
            width: 40%;
            right: -100%;
            top: 50%;
            transform: translateY(-50%) rotate(3deg);
            background-color: white;
            padding: 40px;
            border-radius: 10px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
            transition: all 1s ease-in-out;
            max-height: 70vh;
            overflow-y: auto;
            z-index: 50;
        }

        #letter h1 {
            color: #580000;
            text-align: center;
        }

        #letter p {
            line-height: 1.6;
        }

        #confetti-canvas {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 10;
            pointer-events: none;
            display: none;
        }

        #spacer {
            height: 100vh;
        }