*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    min-height: 100vh;
    background: #fff;
}
header {
    background: #000;
    color: #fff;
    padding: 1.5rem;
    text-align: center;
}
header h1 {
    font-size: 2rem;
}
.container { 
    text-align: center;
    padding: 3rem 2rem;
    color: #333;
    margin: 0 auto;
    
}

p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: #666;
}
.retry-btn {
    display: inline-block;
    background: #000;
    color: #fff;
    border: none;
    padding: 1rem 2rem;
    font-size: 1rem;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    transition: transform 0.2s;
    text-decoration: none;
}
.retry-btn:hover {
    transform: scale(1.05);
    color: #fff;
}