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

body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    color: #333;
}

header {
    background-color: #0044cc;
    color: white;
    padding: 20px;
    text-align: center;
}

header h1 {
    font-size: 2.5em;
}

nav ul {
    list-style-type: none;
    margin-top: 20px;
}

nav ul li {
    display: inline;
    margin-right: 15px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-size: 1.2em;
}

section {
    padding: 20px;
    margin: 20px auto;
    max-width: 900px;
    background-color: white;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

section h2 {
    color: #0044cc;
    font-size: 2em;
    margin-bottom: 10px;
}

section p {
    line-height: 1.6;
    font-size: 1.1em;
}

.hologram-example {
    text-align: center;
    margin-top: 20px;
}

.hologram-example img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
}

footer {
    text-align: center;
    padding: 10px;
    background-color: #0044cc;
    color: white;
    margin-top: 40px;
}

footer p {
    font-size: 1em;
}