CSS - Flex 实例篇（四）

.box {
  display: flex;
  flex-wrap: wrap;
  align-content: space-between;
}

.box {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  align-content: space-between;
}

<div class="box">
  <div class="row">
    <span class="item"></span>
    <span class="item"></span>
    <span class="item"></span>
  </div>
  <div class="row">
    <span class="item"></span>
  </div>
  <div class="row">
     <span class="item"></span>
     <span class="item"></span>
  </div>
</div>

.box {
  display: flex;
  flex-wrap: wrap;
}
.row{
  flex-basis: 100%;
  display:flex;
}
.row:nth-child(2){
  justify-content: center;
}
.row:nth-child(3){
  justify-content: space-between;
}