body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    font-size: 10px;
    margin-right: 150px;
    margin-left: 150px;
}
.grid-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: auto;
    gap: 10px;
    padding: 20px;
    }
.grid-item {
    border: 1px solid #000;
    padding: 20px;
    text-align: center;
}
.grid-item.large {
    grid-column: span 2;
}
.grid-item.tall {
    grid-row: span 2;
}