body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    background-image: url('https://media2.giphy.com/media/v1.Y2lkPTc5MGI3NjExMm1lOGRpOXIzcWhmMXpva3Z6djU3bTExdnZpd20xcWF3OG9mMHpxdyZlcD12MV9pbnRlcm5hbF9naWZfYnlfaWQmY3Q9Zw/13n7XeyIXEIrbG/giphy.gif');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: Arial, sans-serif;
}

.text-overlay {
    text-align: center;
    color: rgb(0, 0, 0);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
    font-size: 3em;
}

.img-size {
    width: 100%;
    height: auto;
    max-width: 600px;
    margin: 20px 0;
}

@media (max-width: 600px) {
    .text-overlay {
        font-size: 2em;
    }
    
    .img-size {
        width: auto;
        height: auto;
        max-width: 100%;
    }
}