body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}


.parent {
    width: 960px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}


.child {
    padding: 20px;
    background-color: #f4f4f4;
    border: 1px solid #ccc;
    border-radius: 8px;
}