flex实践篇

<!DOCTYPE HTML>
<html>
<head>
<meta charset='utf-8'>
<title>test</title>
<style type="text/css">
    .bg-red{
        background-color: red;
    }
    .bg-blue{
        background-color: blue;
    }
    .bg-yellow{
        background-color: yellow;
    }
    .box{
        display: flex;
        justify-content: space-between;
        flex-direction : column;
        width: 200px;
        height: 200px;
        background-color: grey;
    }
    .item{
        display: inline-block;
        width: 20px;
        height: 20px;
        border-radius: 50%;
        background-color: red;
    }
    .item:nth-child(2){
        align-self: center;
    }
    .item:nth-child(3){
        align-self: flex-end;
    }
    .m-l-20{
        margin-left: 20px;
    }
    .m-t-20{
        margin-top: 20px;
    }
    .box1{
        display: flex;
        justify-content: flex-end;
        width: 200px;
        height: 200px;
        background-color: grey;
    }
    .item1{
        display: inline-block;
        width: 20px;
        height: 20px;
        border-radius: 50%;
        background-color: red;
    }
    .item1:nth-child(4){
        align-self: flex-end;
    }

    .box2{
        display: flex;
        flex-wrap: wrap;
        align-content: space-between;
        width: 200px;
        height: 200px;
        background-color: grey;
    }
    .column{
        flex-basis: 100%;
        display: flex;
        justify-content: space-between;
    }
    .item2{
        display: inline-block;
        width: 20px;
        height: 20px;
        border-radius: 50%;
        background-color: red;
    }
   

    .Grid {
      width: 100%;
      height: 200px;
      display: flex;
    }

    .Grid-cell {
      flex: 1;
    }

    .Grid-cell.u-full {
      flex: 0 0 100%;
    }

    .Grid-cell.u-1of2 {
      flex: 0 0 50%;
    }

    .Grid-cell.u-1of3 {
      flex: 0 0 33.3333%;
    }

    .Grid-cell.u-1of4 {
      flex: 0 0 25%;
    }

    .HolyGrail {
      display: flex;
      min-height: 100vh;
      flex-direction: column;
    }

    header,
    footer {
      flex: 1;
    }

    .HolyGrail-body {
      display: flex;
      flex: 4;
      text-align: center;
    }

    .HolyGrail-content {
      flex: 1;
    }

    .HolyGrail-nav, .HolyGrail-ads {
      /* 两个边栏的宽度设为12em */
      flex: 0 0 12em;
    }

    .HolyGrail-nav {
      /* 导航放到最左边 */
      order: -1;
    }
    @media (max-width: 768px) {
      .HolyGrail-body {
        flex-direction: column;
        flex: 1;
      }
      .HolyGrail-nav,
      .HolyGrail-ads,
      .HolyGrail-content {
        flex: auto;
      }
    }

  .InputAddOn {
      display: flex;
  }
  .InputAddOn-field {
    flex: 1;
  }


  .Media {
    display: flex;
    align-items: flex-start;
  }
  .Media-figure {   
    margin-right: 1em;
  }
  .Media-body {
    flex: 1;
  }


  .parent {
    width: 200px;
    height: 150px;
    background-color: black;
    display: flex;
    flex-flow: row wrap;
    align-content: flex-start;
  }

  .child {
    box-sizing: border-box;
    background-color: white;
    flex: 0 0 25%;
    height: 50px;
    border: 1px solid red;
  }

</style>
</head>

<body>
  <div class="box">
    <span class="item"></span>
    <span class="item"></span>
    <span class="item"></span>
  </div>
  <div class="box1 m-t-20">
    <span class="item1"></span>
    <span class="item1"></span>
    <span class="item1"></span>
    <span class="item1"></span>
  </div>
  <div class="box2 m-t-20">
    <div class="column">
        <span class="item2"></span>
        <span class="item2"></span>
    </div>
    <div class="column">
        <span class="item2"></span>
        <span class="item2"></span>
    </div>
    <div class="column">
        <span class="item2"></span>
        <span class="item2"></span>
    </div>
  </div>

  <h4>网格布局</h4>
  <div class="Grid">
    <div class="Grid-cell u-1of4 bg-yellow">1</div>
    <div class="Grid-cell bg-red">2</div>
    <div class="Grid-cell u-1of3 bg-blue">3</div>
  </div>

  <h4>圣杯布局</h4>
  <div class="HolyGrail">
      <header class="bg-red">head</header>
      <div class="HolyGrail-body">
        <main class="HolyGrail-content bg-yellow">main</main>
        <nav class="HolyGrail-nav bg-blue">nav</nav>
        <aside class="HolyGrail-ads bg-blue">aside</aside>
      </div>
      <footer class="bg-red">footer</footer>
  </div>

  <h4>输入框的布局</h4>
  <div class="InputAddOn">
    <span class="InputAddOn-item">1</span>
    <input class="InputAddOn-field">
    <button class="InputAddOn-item">提交</button>
  </div>

  <h4>悬挂式布局</h4>
  <div class="Media">
    <span>1</span>
    <div class="Media-body">...</div>
  </div>

  <h4>流式布局</h4>
  <div class="parent">
    <div class="child"></div>
    <div class="child"></div>
    <div class="child"></div>
    <div class="child"></div>
    <div class="child"></div>
  </div>

</body>

</html>
flex实践篇

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