Template:NavboxGroup/styles.css

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

.navbox-group-title {
    display: flex;
    align-items: center;
    justify-content: end;
    flex-shrink: 0;
    padding: 0.25rem;
    font-weight: bold;
    color: var(--color-strongBlue);
    /* this ensures that when setting a width to this element to align it with the rest,
      this width set would include both padding and the possible border, avoiding a weird resulting width. */
    box-sizing: border-box;
    border: 2px solid var(--gray--slightly-lighter);
    /* just a starting point for the transition */
    min-width: 0px;
    
    transition: min-width 100ms ease-out;
}

.navbox-group-content {
    display: flex;
    flex-wrap: wrap;
}