* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f4f4f4;
    color: #222;
}

header {
    background: #1f2937;
    color: white;
    text-align: center;
    padding: 35px 20px;
}

header h1 {
    margin: 0 0 10px;
}

nav {
    background: #111827;
    text-align: center;
    padding: 15px;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 0 15px;
}

nav a:hover {
    color: #60a5fa;
}

section {
    max-width: 900px;
    margin: 30px auto;
    padding: 30px;
    background: white;
    border-radius: 10px;
}

.hero {
    text-align: center;
}

.hero h2 {
    font-size: 32px;
}

button {
    background: #2563eb;
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background: #1d4ed8;
}

.main-image {
    width: 100%;
    max-width: 700px;
    display: block;
    margin: 20px auto;
    border-radius: 10px;
}

.video {
    width: 100%;
    max-width: 700px;
    display: block;
    margin: auto;
    border-radius: 10px;
}

footer {
    background: #1f2937;
    color: white;
    text-align: center;
    padding: 20px;
    margin-top: 40px;
}

@media (max-width: 600px) {

    nav a {
        display: block;
        margin: 10px;
    }

    section {
        margin: 15px;
        padding: 20px;
    }
}