body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: #f5f5f5;
    color: #333;
}

.container {
    width: 80%;
    max-width: 900px;
    margin: 60px auto;
    background: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,.1);
}

h1 {
    color: #1565c0;
}

.tag {
    display: inline-block;
    background: #1565c0;
    color: white;
    padding: 6px 12px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.button {
    display: inline-block;
    margin-top: 20px;
    background: #1565c0;
    color: white;
    text-decoration: none;
    padding: 12px 24px;
    border-radius: 5px;
}

footer {
    margin-top: 40px;
    font-size: 13px;
    color: gray;
}