.flex-container1 {
    display: flex;
    background-color: dodgerblue;
}
.flex-container1 > div {
    background-color: #f1f1f1;
    margin: 10px;
    padding: 20px;
    font-size: 30px;
}

.flex-container2 {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: dodgerblue;
}
.flex-container2 > div {
    background-color: #f1f1f1;
    margin: 10px;
    padding: 20px;
    font-size: 30px;
}

.flex-container3 {
    display: flex;
    flex-direction: column;
    background-color: dodgerblue;
}
.flex-container3 > div {
    background-color: #f1f1f1;
    margin: 10px;
    padding: 20px;
    font-size: 30px;
    width: 20px;
}

.flex-container6 {
    display: flex;
    justify-content: space-between;
    background-color: dodgerblue;
}
.flex-container6 > div {
    background-color: #f1f1f1;
    margin: 10px;
    padding: 20px;
    font-size: 30px;
}

.flex-container7 {
    display: flex;
    background-color: dodgerblue;
}
.flex-container7 > div {
    background-color: #f1f1f1;
    margin: 10px;
    padding: 20px;
    font-size: 30px;
    text-align: center;
}