body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
}

.intro {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    background-color: #333;
    color: #fff;
    animation: fadeIn 2s ease-in-out;
}

.logo {
    width: 150px;
    height: 150px;
    animation: slideIn 2s ease-in-out;
}

.name {
    font-size: 2.5em;
    margin-top: 20px;
    animation: fadeIn 2s ease-in-out;
}

.main-content {
    display: none;
    padding: 20px;
    text-align: center;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideIn {
    from {
        transform: translateY(-100px);
    }
    to {
        transform: translateY(0);
    }
}