html - 当屏幕尺寸减小（宽度）时，如何使 flex 容器在行中显示 div？

Question

我想让这个 flex 容器（.flex-container）能够在屏幕尺寸减小时按行显示 div。这个弹性容器内部也有一个网格容器。我希望蓝色 div 先行，红色容器先行。我尝试了 flex-direction 并将网格容器的显示更改为 flex 但它没有奏效。

这是我的代码：

.flex-container {
  height: 900px;
  background-color: black;
  display: flex;
}

.my-info-menu {
  background-color: blue;
  height: 800px;
  width: 25%;
}

.container {
  width: 80%;
}

.grid-container {
  width: 95%;
  height: 600px;
  display: grid;
  margin: 0 auto;
  grid-template-columns: auto auto auto;
  grid-template-rows: auto auto;
}

.grid-item {
  background: red;
  color: blueviolet;
  height: 80%;
  width: 95%;
}

@media only screen and (max-width: 600px) {
  body {
    background-color: lightblue;
  }
  .flex-container {
    height: 2000px;
    flex-direction: row;
  }
  .grid-container {
    display: flex;
    flex-direction: row;
  }
}

<meta name="viewport" content="width=device-width, initial-scale=1.0">



<div class="flex-container">
  <div class="my-info-menu"></div>

  <div class="container">
    <div class="grid-container">
      <div class="grid-item">1</div>
      <div class="grid-item">2</div>
      <div class="grid-item">3</div>
      <div class="grid-item">4</div>
      <div class="grid-item">5</div>
      <div class="grid-item">6</div>
    </div>

  </div>

</div>

标签： htmlcssflexboxcss-grid

Answer 1

有了flex，您可以使用flex-wrap和min-width创建断点。flexorgrid可以轻松地使用gap属性和flex-grow（或fr）规则在元素之间调度和创建标尺。

这是我猜你尝试做的一个例子。

* {
  margin: 0;
  box-sizing: border-box;
}

.flex-container {
  min-height: 100vh;
  background-color: black;
  display: flex;
  flex-wrap: wrap;
  gap: 1em;
}

.my-info-menu {
  background-color: blue;
  min-width: 25%;
  flex-grow: 1;
}

.container {
  min-width: 500px;
  flex-grow: 1;
}

.grid-container {
  display: grid;
  grid-template-columns: auto auto auto;
  grid-template-rows: auto auto;
  min-height: 100%;
  gap: 1em;
}

.grid-item {
  background: red;
  color: blueviolet
}

<meta name="viewport" content="width=device-width, initial-scale=1.0">
<div class="flex-container">
  <div class="my-info-menu">run me in full page mode<br> reset the min-width value to set where break points should happend<br> same for the min-height value of container , if screenHeight is not what you need.</div>
  <div class="container">
    <div class="grid-container">
      <div class="grid-item">1</div>
      <div class="grid-item">2</div>
      <div class="grid-item">3</div>
      <div class="grid-item">4</div>
      <div class="grid-item">5</div>
      <div class="grid-item">6</div>
    </div>

  </div>

</div>