.flex {
    display: flex;
    margin-right:0 !important;
    margin-left:0 !important;
}
.row {
    flex-direction: row;
}
.col {
    flex-direction: column;
}
.jc {
    justify-content: center;
}
.js {
    justify-content: start;
}
.ac {
    align-items: center;
}