body {
    background-color: #e9ecef;
    margin: 0;
    padding: 20px;
}


.text-center, main {
    background-color: #ffffff;
    border-radius: 8px;
    padding: 40px;
}

img {
    border: 1px solid #dee2e6;
    box-shadow: 0 2px 4px rgba(0,0,0,0.08);
    max-width: 100%;
}