.wtag-flex {
    display: flex;
    align-items: stretch;
    align-content: stretch;
}

.wtag-flex.center {
    align-items: center;
    align-content: center;
}

.wtag-flex.wrap {
    flex-wrap: wrap;
}


.wtag-flex.expand {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
}

.wtag-flex > * {
    flex: 1 1 auto;
    flex: 1 1 main-size;
}

.wtag-flex > *.fixed {
    flex: 0;
}

.wtag-flex.row,
.wtag-flex.horizontal {
    flex-direction: row;
}

.wtag-flex.vertical,
.wtag-flex.column {
    flex-direction: column;
}

@media (orientation: landscape) {
    .wtag-flex.wide {
        flex-direction: row;
    }
    .wtag-flex.narrow {
        flex-direction: column;
    }
}

@media (orientation: portrait) {
    .wtag-flex.wide {
        flex-direction: column;
    }
    .wtag-flex.narrow {
        flex-direction: row;
    }
}

.wtag-flex > *.grow {
    flex-grow: 1;
}

.wtag-flex > *.grow-2 {
    flex-grow: 2;
}


.wtag-flex > *.grow-3 {
    flex-grow: 3;
}