/* http://simevidas.jsbin.com/gufoko/quiet */
.gr {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
            
    height: 100%;
    margin: 0;
    padding: 0;

    list-style: none;

    -webkit-box-orient: vertical;

    -webkit-box-direction: normal;

    -webkit-flex-direction: column;

        -ms-flex-direction: column;

            flex-direction: column;
    -webkit-flex-wrap: wrap;
        -ms-flex-wrap: wrap;
            flex-wrap: wrap;
    -webkit-box-pack: start;
    -webkit-justify-content: flex-start;
        -ms-flex-pack: start;
            justify-content: flex-start;
    -webkit-box-align: stretch;
    -webkit-align-items: stretch;
        -ms-flex-align: stretch;
            align-items: stretch;
    -webkit-align-content: stretch;
        -ms-flex-line-pack: stretch;
            align-content: stretch;
}

.gr-cell {
  -webkit-box-flex: 1;
  -webkit-flex: 1;
      -ms-flex: 1;
          flex: 1;
}

/* Alignment per grid row */
.gr--top {
  -webkit-box-align: start;
  -webkit-align-items: flex-start;
      -ms-flex-align: start;
          align-items: flex-start;
}

.gr--bottom {
  -webkit-box-align: end;
  -webkit-align-items: flex-end;
      -ms-flex-align: end;
          align-items: flex-end;
}

.gr--center {
  -webkit-box-align: center;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
}

.gr--row {
  -webkit-box-orient: horizontal;
  -webkit-box-direction: normal;
  -webkit-flex-direction: row;
      -ms-flex-direction: row;
          flex-direction: row;
}

/* Alignment per cell */
.gr-cell--top {
  -webkit-align-self: flex-start;
      -ms-flex-item-align: start;
          align-self: flex-start;
}
.gr-cell--bottom {
  -webkit-align-self: flex-end;
      -ms-flex-item-align: end;
          align-self: flex-end;
}
.gr-cell--center {
  -webkit-align-self: center;
      -ms-flex-item-align: center;
          align-self: center;
}

/* Base classes for all media */
.gr--fit > .gr-cell {
  -webkit-box-flex: 1;
  -webkit-flex: 1;
      -ms-flex: 1;
          flex: 1;
}
.gr--full > .gr-cell {
  -webkit-box-flex: 0;
  -webkit-flex: 0 0 100%;
      -ms-flex: 0 0 100%;
          flex: 0 0 100%;
}
.gr--1of2 > .gr-cell {
  -webkit-box-flex: 0;
  -webkit-flex: 0 0 50%;
      -ms-flex: 0 0 50%;
          flex: 0 0 50%
}
.gr--1of3 > .gr-cell {
  -webkit-box-flex: 0;
  -webkit-flex: 0 0 33.3333%;
      -ms-flex: 0 0 33.3333%;
          flex: 0 0 33.3333%
}
.gr--1of4 > .gr-cell {
  -webkit-box-flex: 0;
  -webkit-flex: 0 0 25%;
      -ms-flex: 0 0 25%;
          flex: 0 0 25%
}

.gr--gutters {
  margin-left: -1em;
}
.gr--gutters > .gr-cell {
  padding-left: 1em;
}