body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    font-family: Arial, sans-serif;
    background-color: #121212;
    color: #ffffff;
}

.container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
    text-align: center;
}

h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.pulse {
    width: 100px;
    height: 100px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(0.8);
        opacity: 0.7;
    }
    50% {
        transform: scale(1);
        opacity: 1;
    }
    100% {
        transform: scale(0.8);
        opacity: 0.7;
    }
}

@media (max-width: 600px) {
    h1 {
        font-size: 2rem;
    }
    
    p {
        font-size: 1rem;
    }
    
    .pulse {
        width: 80px;
        height: 80px;
    }
}