.flex {
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
  }
  .flex-row {
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-orient: horizontal;
    -webkit-flex-direction: row;
    flex-direction: row;
  }
  .flex-col {
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-flex-direction: column;
    flex-direction: column;
  }
  .flex-grow-0 {
    min-width: 0;
    -webkit-box-flex: 0;
    -webkit-flex-grow: 0;
    -ms-flex-positive: 0;
    flex-grow: 0;
    -webkit-flex-shrink: 0;
    -ms-flex-negative: 0;
    flex-shrink: 0;
  }
  .flex-grow-1 {
    min-width: 0;
    -webkit-box-flex: 1;
    -webkit-flex-grow: 1;
    -ms-flex-positive: 1;
    flex-grow: 1;
    -webkit-flex-shrink: 1;
    -ms-flex-negative: 1;
    flex-shrink: 1;
  }
  .flex-x-center {
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -ms-flex-pack: center;
    justify-content: center;
  }
  .flex-y-center {
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    -ms-grid-row-align: center;
    align-items: center;
  }
  .flex-y-bottom {
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    -webkit-box-align: end;
    -webkit-align-items: flex-end;
    -ms-flex-align: end;
    -ms-grid-row-align: end;
    align-items: flex-end;
  }