body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: #f3f4f6;
    color: #1f2937;

    display: flex;
    align-items: center;      /* vertical center */
    justify-content: center;  /* horizontal center ✅ */

    min-height: 100vh;
}

.container {
    background: white;
    padding: 40px;
    max-width: 500px;
    text-align: center;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

h1{
    margin-bottom: 16px;
    font-size: 32px;
    color: #111827;
}

p{
    font-size: 18px;
    line-height: 1.5;
    color: #4b5563;
}