flexbox.css

/* Support for current and last browser version using grunt-postcss autoprefixer */
/* FlexBox
---------------------------------------------------------------------------------------------------- */
.test {
  display: flex;
  height: 500px;
  padding: 15px;
  margin: 24px;
  border: 1px #333 solid;
  flex-wrap: wrap;
  justify-content: space-around;
  flex-direction: row;
}

.test-item {
  padding: 15px;
  margin: 10px;
  background: tomato;
  color: #fff;
  width: 200px;
}

.test-item-1 {
  flex-grow: 1;
}

.test-item-2 {
  order: -1;
  flex-grow: 2;
}

/* Here is the same code with autoprefixing for the last two browser versions */

/* FlexBox
---------------------------------------------------------------------------------------------------- */
.test {
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  height: 500px;
  padding: 15px;
  margin: 24px;
  border: 1px #333 solid;
  -webkit-flex-wrap: wrap;
      -ms-flex-wrap: wrap;
          flex-wrap: wrap;
  -webkit-justify-content: space-around;
      -ms-flex-pack: distribute;
          justify-content: space-around;
  -webkit-flex-direction: row;
      -ms-flex-direction: row;
          flex-direction: row;
}

.test-item {
  padding: 15px;
  margin: 10px;
  background: tomato;
  color: #fff;
  width: 200px;
}

.test-item-1 {
  -webkit-flex-grow: 1;
      -ms-flex-positive: 1;
          flex-grow: 1;
}

.test-item-2 {
  -webkit-order: -1;
      -ms-flex-order: -1;
          order: -1;
  -webkit-flex-grow: 2;
      -ms-flex-positive: 2;
          flex-grow: 2;
}