.divContainer{
    display: flex;
    flex-direction: column;
}
.rowDivContainer{
    display: flex;
    border: 1px solid green;

    width:  500px;

    justify-content: space-around;
}

.divElem{
    height: 30px;
    width: 30px;
    border: 1px solid green;
}
.colorChange{
    background-color: red;
    border: 1px solid green;
    height: 30px;
    width: 30px;
}