如何在flex布局中换行? [英] How to break line in a flex layout?

问题描述

我有第一，第二和第三项，然后无论空间有多宽，我都希望第四项转到下一行.

I have my first, second, and third items and then I want the forth item to go to the next line no matter how wide is the space.

.box {
  display: flex;
  flex-flow: row wrap;
  justify-content: space-around;
  align-items: flex-start;
}
.it {
  max-width: 420px;
}

<div class="box">
  <div class="it">1</div>
  <div class="it">2</div>
  <div class="it">3</div>
  <div class="it">4</div>
</div>

推荐答案

您可以在正确的位置插入一个宽的伪元素:

You can insert a wide pseudo-element at the right position:

.flex-container {
  display: flex;
  flex-wrap: wrap;
}
.flex-container::after {
  content: '';
  width: 100%;
}
.flex-item:last-child { /* or `:nth-child(n + 4)` */
  order: 1;
}

<div class="flex-container">
  <div class="flex-item">1</div>
  <div class="flex-item">2</div>
  <div class="flex-item">3</div>
  <div class="flex-item">4</div>
</div>

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