.flex-center {
    display: flex !important;
    align-items: center;
    justify-content: center;
}

.vert-align {
    position: absolute;
    top: 50%;
    transform: translate(-50%);
    left: 0;
    right: 0;
    margin: 0 auto;
}

.va-table {
    display: table;
    width: 100%;
}

.va-table-cell {
    display: table-cell;
    vertical-align: middle;
    width: 100%;
}