/* Constrain stretched <table>'s position and dimension */
.o-flex-item-table-wrap {
  /* Ensure wrapper has dimensions (which will be remaining space in parent) */
  flex-grow: 1;

  /* Set position and maximum dimensions for child <table> */
  position: relative;
}
/* Strech <table> to fill available space of flex item (the wrapper) */
.o-flex-item-table-wrap > table {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
}