body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", Oxygen, Cantarell, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

div {
    background-color: whitesmoke;
    border: 5px solid whitesmoke;
    border-radius: 10px;
    padding: 20px;
}