.d-flex{
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
}
.f-column{
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -webkit-flex-direction: column;
      -ms-flex-direction: column;
          flex-direction: column;
}
.f-wrap{
  -webkit-flex-wrap: wrap;
      -ms-flex-wrap: wrap;
          flex-wrap: wrap;
}
.j-center{
  -webkit-box-pack: center;
  -webkit-justify-content: center;
      -ms-flex-pack: center;
          justify-content: center;
}
.j-between{
  -webkit-box-pack:justify;
  -webkit-justify-content:space-between;
      -ms-flex-pack:justify;
          justify-content:space-between;
}
.j-around{
  -webkit-justify-content: space-around;
      -ms-flex-pack: distribute;
          justify-content: space-around;
}
.a-center{
  -webkit-box-align: center;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
}
.a-self-end{
  -webkit-align-self: flex-end;
      -ms-flex-item-align: end;
          align-self: flex-end;
}
.a-self-start{
  -webkit-align-self: flex-start;
      -ms-flex-item-align: start;
          align-self: flex-start;
}
.f-item-grow{
  -webkit-box-flex: 1;
  -webkit-flex-grow: 1;
      -ms-flex-positive: 1;
          flex-grow: 1;
}
.f-item-shrink{
  -webkit-flex-shrink: 0;
      -ms-flex-negative: 0;
          flex-shrink: 0;
}