.container-grid.grid-parent {
  display: -webkit-box;
  display: -webkit-flex;
  display:    -moz-box;
  display: -ms-flexbox;
  display:         flex;
  -webkit-flex-direction: column;
      -ms-flex-direction: column;
          flex-direction: column;
  -ms-flex-pack: center;
  -ms-flex-align: center;
  min-height: 800px;

  -webkit-box-pack: center;
  -webkit-justify-content: center;
     -moz-box-pack: center;
          justify-content: center;
  -webkit-box-align: center;
  -webkit-align-items: center;
     -moz-box-align: center;
          align-items: center;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
     -moz-box-orient: vertical;
     -moz-box-direction: normal;
}