如何在弹性项目中使元素底部对齐? [英] How to bottom-align an element inside a flex item?

问题描述

我有一个flex容器，其中包含三个flex项，每个项内部都有一个应该在底部对齐的链接(所有链接的底部居中对齐).

I have a flex container with three flex items and inside each item a link that should be aligned on the bottom (all links bottom middle aligned).

柔性物品被拉伸且没有固定高度，与柔性容器相同.谢谢！

Flex-items are stretched and do not have a fix height, same as flex container. Thanks!

.flex-container {
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-flex-direction: row;
  -ms-flex-direction: row;
  flex-direction: row;
  -webkit-flex-wrap: nowrap;
  -ms-flex-wrap: nowrap;
  flex-wrap: nowrap;
  -webkit-justify-content: center;
  -ms-flex-pack: center;
  justify-content: center;
  -webkit-align-content: flex-start;
  -ms-flex-line-pack: start;
  align-content: flex-start;
  -webkit-align-items: flex-start;
  -ms-flex-align: start;
  align-items: flex-start;
}

.flex-item {
  -webkit-order: 0;
  -ms-flex-order: 0;
  order: 0;
  -webkit-flex: 1 0 0;
  -ms-flex: 1 0 0;
  flex: 1 0 0;
  -webkit-align-self: stretch;
  -ms-flex-item-align: stretch;
  align-self: stretch;
  padding: 15px;
}

<section class="main-section">
  <div class="container">
    <div class="flex-container">
      <div class="flex-item">
        <p class="subTitle">Titel</p>
        <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus dignissim ante turpis, sit amet suscipit velit consequat id. Donec a est tellus. Sed pellentesque non arcu et interdum. Aenean venenatis, ipsum a viverra interdum, neque nisl tincidunt
          arcu, non vulputate justo metus nec quam. Nullam blandit, purus id pretium congue, turpis diam semper sapien, vel suscipit est velit eget leo. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Praesent
          consequat urna quis commodo varius. Praesent hendrerit at augue in fermentum. Ut sed dolor blandit, lacinia orci eget, ultrices elit. Nulla luctus, risus eu viverra eleifend, leo orci posuere nulla, ut vestibulum orci metus in nisi. Aenean et
          porttitor lacus.</p>
        <a href="#">Link</a>
      </div>
      <div class="flex-item">
        <p class="subTitle">Titel</p>
        <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus dignissim ante turpis, sit amet suscipit velit consequat id. Donec a est tellus.</p>
        <a href="#">Link</a>
      </div>
      <div class="flex-item">
        <p class="subTitle">Titel</p>
        <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus dignissim ante turpis, sit amet suscipit velit consequat id. Donec a est tellus. Sed pellentesque non arcu et interdum. Aenean venenatis, ipsum a viverra interdum, neque nisl tincidunt
          arcu, non vulputate justo metus nec quam. Nullam blandit, purus id pretium congue, turpis diam semper sapien, vel suscipit est velit eget leo.</p>
        <a href="#">Link</a>
      </div>
    </div>
  </div>
</section>

https://jsfiddle.net/ABoooo/dns5zr1p/

推荐答案

首先，从容器中删除align-items: flex-start.这将覆盖stretch的默认值，因此这些列未拉伸容器的整个高度.它们只和它们的内容一样高.

First, remove align-items: flex-start from the container. That's overriding the stretch default, so the columns are not stretching the full height of the container. They are only as high as their content.

第二，使用flex-direction: column将伸缩项目放入(嵌套的)伸缩容器中.然后，您可以在链接上使用auto边距将其固定在底部.

Second, make your flex items into (nested) flex containers with flex-direction: column. You can then use an auto margin on the link to fix it to the bottom.

.flex-container {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  justify-content: center;
  align-content: flex-start;
  /* align-items: flex-start; <--------- REMOVE */
}

.flex-item {
  flex: 1 0 0;
  padding: 15px;
  
  display: flex;                /* NEW */
  flex-direction: column;       /* NEW */
}

.flex-item > a {
  margin-top: auto;             /* NEW */
  align-self: center;           /* NEW (optional; horizontal centering) */
}

<section class="main-section">
  <div class="container">
    <div class="flex-container">
      <div class="flex-item">
        <p class="subTitle">Titel</p>
        <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus dignissim ante turpis, sit amet suscipit velit consequat id. Donec a est tellus. Sed pellentesque non arcu et interdum. Aenean venenatis, ipsum a viverra interdum, neque nisl tincidunt
          arcu, non vulputate justo metus nec quam. Nullam blandit, purus id pretium congue, turpis diam semper sapien, vel suscipit est velit eget leo. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Praesent
          consequat urna quis commodo varius. Praesent hendrerit at augue in fermentum. Ut sed dolor blandit, lacinia orci eget, ultrices elit. Nulla luctus, risus eu viverra eleifend, leo orci posuere nulla, ut vestibulum orci metus in nisi. Aenean et
          porttitor lacus.</p>
        <a href="#">Link</a>
      </div>
      <div class="flex-item">
        <p class="subTitle">Titel</p>
        <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus dignissim ante turpis, sit amet suscipit velit consequat id. Donec a est tellus.</p>
        <a href="#">Link</a>
      </div>
      <div class="flex-item">
        <p class="subTitle">Titel</p>
        <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus dignissim ante turpis, sit amet suscipit velit consequat id. Donec a est tellus. Sed pellentesque non arcu et interdum. Aenean venenatis, ipsum a viverra interdum, neque nisl tincidunt
          arcu, non vulputate justo metus nec quam. Nullam blandit, purus id pretium congue, turpis diam semper sapien, vel suscipit est velit eget leo.</p>
        <a href="#">Link</a>
      </div>
    </div>
  </div>
</section>

修订的小提琴

有关弹性auto边距的更多信息:

More info on flex auto margins:

• 在CSS Flexbox中，为什么没有"justify-items"和自我证明".属性?

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