Ekapp/skolehjem/resources/sass/_displays.scss

.d-flex {
    display: flex;
}

.d-none {
    display: none !important;
}

.row {
    display: flex;
    flex-direction: row;
}

.align-items-center {
    align-items: center;
}

.col {
    display: flex;
    flex-direction: column;
}