.container {
    width: 1000px;
    height: 600px;
    background-color: #d1c4e9;
    margin: 40px auto;
    border-radius: 40px;
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    flex-direction: row;
    align-items: center;
    align-content: center;
}

.box {
    width: 45%;
    height: 100px;
    border: 3px solid black;
    border-radius: 20px;
    text-align: center;
    padding: 40px;
    box-sizing: border-box;
    font-size: 24px;
    font-weight: bold;
}

.item1 {
    background-color: #ff9999;
}

.item2 {
    background-color: #99ff99;
}

.item3 {
    background-color: #9999ff;
}

.item4 {
    background-color: #ffff99;
}