body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f9;
    color: #333;
    text-align: center;
    position: relative;
    overflow: hidden;
}

#backgroundVideo {
    position: fixed;
    top: 0;
    left: 0;
    min-width: 100%;
    min-height: 100%;
    z-index: -1;
    object-fit: cover;
}

header {
    background-color: rgba(0, 115, 230, 0.8);
    color: #fff;
    padding: 20px;
}

main {
    padding: 20px;
}

.input-section {
    margin-bottom: 20px;
}

input {
    padding: 10px;
    font-size: 16px;
    width: 300px;
    margin-right: 10px;
}

button {
    padding: 10px 20px;
    font-size: 16px;
    background-color: #0073e6;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #005bb5;
}

.visualization {
    display: flex;
    justify-content: space-around;
    margin: 40px 0;
    position: relative;
}

#client, #dnsResolver, #rootServer, #authServer {
    width: 120px;
    height: 120px;
    background-color: #0073e6;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    position: relative;
}

.line {
    position: absolute;
    width: 2px;
    background-color: #0073e6;
}

#output {
    font-size: 18px;
    margin-top: 20px;
}

.animate {
    animation: move 2s linear;
}

@keyframes move {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(150px, -100px);
    }
}