html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    min-height: 100%;
}

body {
    font-family: Arial, sans-serif;
    background: #e5e5e5;
    color: #333;
    line-height: 1.6;
}

.box {
    max-width: 800px;
    margin: 50px auto;
    padding: 30px;
    box-sizing: border-box;

    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);

    text-align: center;
}

.box h1 {
    text-align: center;
    color: #2c3e50;
}

.box img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 0 auto;
}

.box p {
    text-align: center;
}

.author {
    font-style: italic;
}

.download {
    margin-top: 25px;
}

.download a {
    display: inline-block;
    padding: 12px 24px;
    background: #2c3e50;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: bold;
    transition: 0.2s;
}

.download a:hover {
    background: #34495e;
    transform: translateY(-1px);
}