div.wdg-flex {
    display: inline-flex;
    align-items: center;
    flex-direction: row;
    justify-content: space-around;
    width: 100%;
}

div.wdg-flex.wide {
    display: flex;
}

div.wdg-flex.default > * {
    flex: 0 1 auto;
}

div.wdg-flex.fill > * {
    flex: 1 1 auto;
}