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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: #000000;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    text-align: center;
}

h1 {
    font-size: 2rem;
    font-weight: 300;
    color: #ffffff;
    letter-spacing: 0.1em;
}

h1 span {
    display: inline-block;
    opacity: 0.3;
    animation: lightUp 3s ease-in-out infinite;
}

h1 span:nth-child(1) { animation-delay: 0s; }
h1 span:nth-child(2) { animation-delay: 0.1s; }
h1 span:nth-child(3) { animation-delay: 0.2s; }
h1 span:nth-child(4) { animation-delay: 0.3s; }
h1 span:nth-child(5) { animation-delay: 0.4s; }
h1 span:nth-child(6) { animation-delay: 0.5s; }
h1 span:nth-child(7) { animation-delay: 0.6s; }
h1 span:nth-child(8) { animation-delay: 0.7s; }
h1 span:nth-child(9) { animation-delay: 0.8s; }
h1 span:nth-child(10) { animation-delay: 0.9s; }
h1 span:nth-child(11) { animation-delay: 1.0s; }
h1 span:nth-child(12) { animation-delay: 1.1s; }
h1 span:nth-child(13) { animation-delay: 1.2s; }
h1 span:nth-child(14) { animation-delay: 1.3s; }
h1 span:nth-child(15) { animation-delay: 1.4s; }
h1 span:nth-child(16) { animation-delay: 1.5s; }
h1 span:nth-child(17) { animation-delay: 1.6s; }
h1 span:nth-child(18) { animation-delay: 1.7s; }

@keyframes lightUp {
    0%, 100% {
        opacity: 0.3;
    }
    50% {
        opacity: 1;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 1.5rem;
    }
}