body {
    font-family: sans-serif;
    margin: 0;
    padding: 20px;
    background: #f5f5f5;
}

.grid {
    margin: auto;
}

.grid-item {
    margin-bottom: 10px;
}

.grid-item img {
    width: 100%;
    display: block;
    border-radius: 8px;
}