.flex-parent {
    margin-bottom: 50px;
}

.flex-child {
    flex-basis: 200px;
    text-align: center;
}

.flex-shrink1 {
    flex-shrink: 1;
}

.flex-shrink2 {
    flex-shrink: 2;
}

.flex-shrink3 {
    flex-shrink: 3;
}

.flex-shrink4 {
    flex-shrink: 4;
}

.flex-shrink5 {
    flex-shrink: 5;
}

.flex-shrink6 {
    flex-shrink: 6;
}

.fb400 {
    flex-basis: 400px;
}