body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: grid;
    place-items: center;
    background: #f5f5f5;
}

img {
    margin: 20px;
    width: 90%;
    height: auto;
    max-width: 600px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}