为什么我的 flex 项目没有包装？

Question

所以我在它们自己的 flex-item div 中添加了 3 个图像，它们都位于一个 flex-container div 中，图像随着我制作浏览器而缩放 window 更小，但是它们都保持内联而不是换行并成为一个列，关于如何使它们换行的任何想法？它是这样的：

div class="intro">
    <section id="intro-box">
      <h2>In a nutshell</h2>
      <p>Santorini is one of the Cyclades islands in the Aegean Sea belonging to Greece. It boasts masses of breathtaking cliffs rising over 300m from a submerged caldera. One of the of the most sizeable volcanic eruptions in recorded history happened
        in the island about 3,600 years ago – the Minoan eruption, it occurred at the height of the Minoan civilization.</p>
      <p>Santorini is famous for its dramatic views, spectacular sunsets, peculiar white aubergines and the beautiful town of Thira. The island pulls in circa 1.5 million tourists annually which all flock to experience the stunning panoramas and volcanic-sand
        beaches.
      </p>
      <div class="flex-container">
        <!--Photo from: www.santorinicrystalblue.com -->
        <div class="flex-item"><img class="img-fluid" src="media/sontorini-greece.jpg"></div>
        <!--Photo from: www.static2.traveltek.net -->
        <div class="flex-item"><img class="img-fluid" src="media/santorini-view-1.jpg"></div>
        <!--Photo from: www.mylossantorini.com-->
        <div class="flex-item"><img class="img-fluid" src="media/santorini-restaurant.jpg"></div>
      </div>
    </section>
  </div>
</main>

这是CSS:

    /* Flexbox */

.intro .flex-container {
  width: 100%;
  display: flex;
    flex-direction: row;
    justify-content: center;
    flex-wrap: wrap;
}

.intro .flex-item {
  width: 30%;
  flex-direction: column;
}

.intro .img-fluid {
  width: 90%;
  padding: 2rem 0rem 2rem 0rem;
}

提前致谢！

Answer 1

您需要使用媒体查询来更改.flex-item 的宽度。除非你这样做，否则它们总是会成为 window 的 30%，因此它们永远不会换行。

我提供了一个示例，其中我将您的图像替换为一些库存图像，并包括一个媒体查询以使其以 600 像素换行。

  /* Flexbox */

.intro .flex-container {
  width: 100%;
  display: flex;
    flex-direction: row;
    justify-content: center;
    flex-wrap: wrap;
}

.intro .flex-item {
  width: 30%;
  flex-direction: column;
}

.intro .img-fluid {
  width: 90%;
  padding: 2rem 0rem 2rem 0rem;
} 

@media screen and (max-width:600px) {
  .intro .flex-item {
    width:50%;
  }
}

<div class="intro">
    <section id="intro-box">
      <h2>In a nutshell</h2>
      <p>Santorini is one of the Cyclades islands in the Aegean Sea belonging to Greece. It boasts masses of breathtaking cliffs rising over 300m from a submerged caldera. One of the of the most sizeable volcanic eruptions in recorded history happened
        in the island about 3,600 years ago – the Minoan eruption, it occurred at the height of the Minoan civilization.</p>
      <p>Santorini is famous for its dramatic views, spectacular sunsets, peculiar white aubergines and the beautiful town of Thira. The island pulls in circa 1.5 million tourists annually which all flock to experience the stunning panoramas and volcanic-sand
        beaches.
      </p>
      <div class="flex-container">

        <div class="flex-item"><img class="img-fluid" src="http://www.unsplash.it/400/300"></div>

        <div class="flex-item"><img class="img-fluid" src="http://www.unsplash.it/400/300"></div>

        <div class="flex-item"><img class="img-fluid" src="http://www.unsplash.it/400/300"></div>
      </div>
    </section>
  </div>

Answer 2

两个解决你问题的方法..

您可以使用媒体查询或

您可以将图像形式 % 的宽度更改为 px 或类似单位
这样浏览器将尝试保持给定的宽度
如果宽度以百分比给出，它将尝试减小或增加图像的大小，因此没有 space 用于换行

为什么我的 flex 项目没有包装？

Why are my flex items not wrapping?

html

css

flexbox

responsive