使用flexbox CSS左列和右列

Question

在大屏幕上，我想在左边有一个列，右边有另一列有2个堆叠的盒子。

在小屏幕上，这些列应该堆叠成一列。但是，方框的顺序应为2,1,3。

以下是插图：

我已使用flex-direction: column和flex-wrap: wrap设置了灵活容器，并将第1个框设置为flex-basis: 100%，但这并未将后两个项目包装到下一栏。

如何在flexbox中实现此布局？

以下是我到目前为止的演示：

＆＃13;

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.container {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
}
.cell {
  background: #ccc;
  border: solid 3px black;
  width: 50%;
}
.cell-1 {
  flex-basis: 100%;
}
@media (max-width: 500px) {
  .cell {
    width: 100%;
  }
  .cell-1 {
    order: 2;
  }
  .cell-2 {
    order: 1;
  }
  .cell-3 {
    order: 3;
  }
}

＆＃13;

<h1>Vertical Boxes</h1>
<p>Goal: Have one box on the left, and two boxes on the right that are stacked. All without nesting, so that the order of the boxes can be changed on smaller screen sizes.</p>
<div class="container">
  <div class="cell cell-1">
    <h2>One</h2>
    Lorem ipsum dolor sit amet, consectetur adipisicing elit. Iusto pariatur rerum, illum accusantium cupiditate ipsam, eaque quae fugit cum assumenda ad. Modi, excepturi. Assumenda, nobis, consequatur? Aliquid repellendus quis, iure. Lorem ipsum dolor sit
    amet, consectetur adipisicing elit. Iusto pariatur rerum, illum accusantium cupiditate ipsam, eaque quae fugit cum assumenda ad. Modi, excepturi. Assumenda, nobis, consequatur? Aliquid repellendus quis, iure. Lorem ipsum dolor sit amet, consectetur
    adipisicing elit. Iusto pariatur rerum, illum accusantium cupiditate ipsam, eaque quae fugit cum assumenda ad. Modi, excepturi. Assumenda, nobis, consequatur? Aliquid repellendus quis, iure. Lorem ipsum dolor sit amet, consectetur adipisicing elit.
    Iusto pariatur rerum, illum accusantium cupiditate ipsam, eaque quae fugit cum assumenda ad. Modi, excepturi. Assumenda, nobis, consequatur? Aliquid repellendus quis, iure.
  </div>
  <div class="cell cell-2">
    <h2>Two</h2>
    Lorem ipsum dolor sit amet, consectetur adipisicing elit. Iste mollitia temporibus id sint illum doloremque pariatur nulla vel soluta, nostrum vitae, suscipit ea natus sed eaque in velit deserunt deleniti!
  </div>
  <div class="cell cell-3">
    <h2>Three</h2>
    Lorem ipsum dolor sit amet, consectetur adipisicing elit. Impedit, architecto perferendis voluptatum accusantium est ipsam fugit, laudantium fugiat nostrum consectetur earum. Asperiores, similique deleniti nobis nemo error, iste iure architecto.
  </div>
</div>

＆＃13;

＆＃13;

＆＃13;

http://codepen.io/dloewen/pen/qOzogG

Answer 1

看起来你几乎就在那里。还有两个步骤：

1. 定义Flex容器的高度

   如果没有定义的高度，某些浏览器可能不知道在哪里换行。试试这个：

   .container {
       display: flex;
       flex-direction: column;
       flex-wrap: wrap;
       height: 500px; /* new; value just for demo purposes */
   }
   

2. 关闭移动视图的换行

   @media (max-width: 500px) {
      .container { flex-wrap: nowrap; } /* new */
      .cell { width: 100%; }
      .cell-1 { order: 2; }
      .cell-2 { order: 1; }
      .cell-3 { order: 3; }
   }
   

＆＃13;
＆＃13;
.container {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  height: 500px;
}
.cell {
  background: #ccc;
  border: solid 3px black;
  width: 50%;
}
.cell-1 {
  flex-basis: 100%;
}
@media (max-width: 500px) {
  .container {
    flex-wrap: nowrap;
  }
  .cell {
    width: 100%;
  }
  .cell-1 {
    order: 2;
  }
  .cell-2 {
    order: 1;
  }
  .cell-3 {
    order: 3;
  }
}
＆＃13;
<h1>Vertical Boxes</h1>
<p>Goal: Have one box on the left, and two boxes on the right that are stacked. All without nesting, so that the order of the boxes can be changed on smaller screen sizes.</p>
<div class="container">
  <div class="cell cell-1">
    <h2>One</h2>
    Lorem ipsum dolor sit amet, consectetur adipisicing elit. Iusto pariatur rerum, illum accusantium cupiditate ipsam, eaque quae fugit cum assumenda ad. Modi, excepturi. Assumenda, nobis, consequatur? Aliquid repellendus quis, iure. Lorem ipsum dolor sit
    amet, consectetur adipisicing elit. Iusto pariatur rerum, illum accusantium cupiditate ipsam, eaque quae fugit cum assumenda ad. Modi, excepturi. Assumenda, nobis, consequatur? Aliquid repellendus quis, iure. Lorem ipsum dolor sit amet, consectetur
    adipisicing elit. Iusto pariatur rerum, illum accusantium cupiditate ipsam, eaque quae fugit cum assumenda ad. Modi, excepturi. Assumenda, nobis, consequatur? Aliquid repellendus quis, iure. Lorem ipsum dolor sit amet, consectetur adipisicing elit.
    Iusto pariatur rerum, illum accusantium cupiditate ipsam, eaque quae fugit cum assumenda ad. Modi, excepturi. Assumenda, nobis, consequatur? Aliquid repellendus quis, iure.
  </div>
  <div class="cell cell-2">
    <h2>Two</h2>
    Lorem ipsum dolor sit amet, consectetur adipisicing elit. Iste mollitia temporibus id sint illum doloremque pariatur nulla vel soluta, nostrum vitae, suscipit ea natus sed eaque in velit deserunt deleniti!
  </div>
  <div class="cell cell-3">
    <h2>Three</h2>
    Lorem ipsum dolor sit amet, consectetur adipisicing elit. Impedit, architecto perferendis voluptatum accusantium est ipsam fugit, laudantium fugiat nostrum consectetur earum. Asperiores, similique deleniti nobis nemo error, iste iure architecto.
  </div>
</div>
＆＃13;
＆＃13;
＆＃13;

revised codepen

Answer 2

首先，我们创建一个容器.Box并设置宽度和高度。老实说，它仅用于演示我设置80vw和80vh。并且该容器应该是具有列方向flex-flow: column wrap;的flex元素。我们设置最大块的最大宽度（.BoxItem--large { max-width: 80%; height: 100%; }）100％父项高度。它用于包装新行/列上的其他元素。因此，来自另一列的元素应填充所有空格，因此我们设置.BoxItem--small { max-width: 20%; height: auto; } - 是，80％+ 20％== 100％，即数学。让我们改变低宽度屏幕上的行为。 @media screen and (max-width: 600px) { .Box { flex-flow: column nowrap; } }我们不需要包装元素，所以只需改变它。之后，我们希望每个BoxItem元素继承父级宽度。 .BoxItem { width: 100%; max-width: 100%; } max-width: 100%;要进行级联，我们不希望关注.BoxItem--large { max-width: 80%; }和.BoxItem--small { max-width: 20%; }等旧规则。并设置一些订单更改。

*,
*:before,
*:after {
  box-sizing: inherit;
}
html {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}
body {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
      -ms-flex-pack: center;
          justify-content: center;
  background-color: #F72F4E;
  overflow: hidden;
}


.Box {
  width: 80vw;
  height: 80vh;
  background-color: rgba(0,0,0,.2);
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-flow: column wrap;
      -ms-flex-flow: column wrap;
          flex-flow: column wrap;
  -webkit-box-align: baseline;
  -webkit-align-items: baseline;
      -ms-flex-align: baseline;
          align-items: baseline;
}

.BoxItem {
  background-color: #fff;
  border: 1px solid #000;
}
.BoxItem--large {
  max-width: 80%;
  height: 100%;
}
.BoxItem--small {
  max-width: 20%;
  height: auto;
}
@media screen and (max-width: 600px) {
  .Box {
    -webkit-flex-flow: column nowrap;
        -ms-flex-flow: column nowrap;
            flex-flow: column nowrap;
  }
  .BoxItem {
    width: 100%;
    max-width: 100%;
  }
  .BoxItem--large {
    height: auto;
  }
  .BoxItem--1 {
    -webkit-box-ordinal-group: 3;
    -webkit-order: 2;
        -ms-flex-order: 2;
            order: 2;
  }
  .BoxItem--2 {
    -webkit-box-ordinal-group: 2;
    -webkit-order: 1;
        -ms-flex-order: 1;
            order: 1;
  }
  .BoxItem--3 {
    -webkit-box-ordinal-group: 4;
    -webkit-order: 3;
        -ms-flex-order: 3;
            order: 3;
  }
}

<div class="Box">
  <div class="BoxItem BoxItem--large BoxItem--1">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Iusto omnis rerum ea assumenda velit. Dolores ea unde iste esse illo sit, repellat molestias deleniti, voluptas expedita commodi odio possimus amet?</div>
  <div class="BoxItem BoxItem--small BoxItem--2">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Iusto omnis rerum ea assumenda velit.</div>
  <div class="BoxItem BoxItem--small BoxItem--3">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Iusto omnis rerum ea assumenda velit.</div>
</div>