.container {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    grid-template-rows: 100px 100px 100px;
    grid-gap:20px;
}

.item {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: chartreuse;
    border-radius: 5px;
    font-size: 2em;
    color: darkslategrey;
}

.item2 {

}