* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    font-family: 'Arial', sans-serif;
}

.greeting {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
    z-index: 10;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
}

.greeting h1 {
    font-size: 4em;
    margin-bottom: 20px;
    animation: glow 2s ease-in-out infinite alternate;
}

.greeting p {
    font-size: 1.5em;
    opacity: 0.9;
}

@keyframes glow {
    from {
        text-shadow: 0 0 20px rgba(255, 255, 255, 0.5), 0 0 30px rgba(135, 206, 250, 0.3);
    }
    to {
        text-shadow: 0 0 30px rgba(255, 255, 255, 0.8), 0 0 40px rgba(135, 206, 250, 0.5);
    }
}

.snowflake {
    position: fixed;
    top: -10px;
    color: white;
    font-size: 1em;
    user-select: none;
    pointer-events: none;
    animation: fall linear infinite;
    opacity: 0.8;
    z-index: 9999;
}

@keyframes fall {
    to {
        transform: translateY(100vh) rotate(360deg);
    }
}

@keyframes sway {
    0%, 100% {
        transform: translateX(0);
    }
    50% {
        transform: translateX(20px);
    }
}