html – flex-wrap无法正常工作

我已经设置了一系列三个容器并应用了display：flex;和flex-wrap：wrap;对他们来说,但是当我减小窗户尺寸时他们没有包装？

我已经把代码放在下面,似乎无法解决问题的根源.

body {
  font-family: arial;
}

p {
  color: white;
}

.container {
  background-color: #666;
  width: 800px;
  height: 200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.item {
  padding: 10px;
  Box-sizing: border-Box;
}

.item1 {
  flex: 1;
  background-color: red;
}

.item2 {
  flex: 1;
  background-color: blue;
}

.item3 {
  flex: 1;
  background-color: green;
}

<div class="container">

  <div class="item item1">
    <h1>ITEM1</h1>
    <p>flex: 1</p>
  </div>

  <div class="item item2">
    <h1>ITEM2</h1>
    <p>flex: 1</p>
  </div>

  <div class="item item3">
    <h1>ITEM3</h1>
    <p>flex: 1</p>
  </div>

</div>

解决方法

您需要在容器上使用max-width而不是width,您必须允许容器缩小以包装项目.

body {
  font-family: arial;
}

p {
  color: white;
}

.container {
  background-color: #666;
  max-width: 800px;
  height: 200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.item {
  padding: 10px;
  Box-sizing: border-Box;
}

.item1 {
  flex: 1;
  background-color: red;
}

.item2 {
  flex: 1;
  background-color: blue;
}

.item3 {
  flex: 1;
  background-color: green;
}

<div class="container">

  <div class="item item1">
    <h1>ITEM1</h1>
    <p>flex: 1</p>
  </div>

  <div class="item item2">
    <h1>ITEM2</h1>
    <p>flex: 1</p>
  </div>

  <div class="item item3">
    <h1>ITEM3</h1>
    <p>flex: 1</p>
  </div>

</div>