blocks|key|3728507|text|你没有提供html代码，所以我想这是可以的。现在看到你写的东西，你需要包装你的物品(你做到了)，但也需要给你的物品一个大小。你写的大小是以像素为单位的，并不代表半个屏幕，你可能打错了。以下是您需要的最低css：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3728508|.container+{
++display:+flex;
++flex-wrap:+wrap;
}

.container+>+*+{
++width:+50%25;
}+|code-block|syntax|javascript|3728509|下面是一个组件来说明：|3728510|import+React,+{+Component+}+from+'react';
import+{+render+}+from+'react-dom';
import+'./style.css';

const+App+=+()+=>+{
++return+(
++++<div+className="container">
++++++<div>Hello</div>
++++++<div>world</div>
++++++<div>Here</div>
++++++<div>I</div>
++++++<div>Am</div>
++++</div>
++);
};

render(<App+/>,+document.getElementById('root'));|3728511|这是the+repro+on+Stackblitz。|offset|length|3728512|entityMap|0|LINK|mutability|MUTABLE|url|https://stackblitz.com/edit/react-functional-boilerplate-16-13-1-b3d6ti?file=index.js^0|0|0|0|0|2|N|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|10|8|@]|9|@$M|11|N|12|1|13]]|A|$]]|$1|O|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

<p>You didn't provide you html code so I'll suppose it's ok. Now seeing what you wrote, you need to wrap your items (You did it) but also need to give your items a size. The size you wrote is in pixel and does not represent half of the screen, you might have done a typo. Here is the minimum css you need for what you want :</p>
<pre><code>.container {
  display: flex;
  flex-wrap: wrap;
}

.container &gt; * {
  width: 50%;
} 
</code></pre>
<p>And here is a component to illustrate :</p>
<pre><code>import React, { Component } from 'react';
import { render } from 'react-dom';
import './style.css';

const App = () =&gt; {
  return (
    &lt;div className=&quot;container&quot;&gt;
      &lt;div&gt;Hello&lt;/div&gt;
      &lt;div&gt;world&lt;/div&gt;
      &lt;div&gt;Here&lt;/div&gt;
      &lt;div&gt;I&lt;/div&gt;
      &lt;div&gt;Am&lt;/div&gt;
    &lt;/div&gt;
  );
};

render(&lt;App /&gt;, document.getElementById('root'));
</code></pre>
<p>Here is the <a href="https://stackblitz.com/edit/react-functional-boilerplate-16-13-1-b3d6ti?file=index.js" rel="nofollow noreferrer">the repro on Stackblitz</a>.</p>


blocks|key|3728538|text|css中的一个技巧：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3728539|width:+calc(100%25/2);|code-block|syntax|javascript|3728540|将此放入卡中|offset|length|style|BOLD|3728541|.Cards{
++...
++.Card{
++++width:+calc(100%25/2);
++++...
++}
}|3728542|有关计算的更多信息：https://developer.mozilla.org/en-US/docs/Web/CSS/calc()|3728543|新的方法，这也很容易阅读。|3728544|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.mozilla.org/en-US/docs/Web/CSS/calc()^0|0|0|4|1|0|0|A|1J|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|12|8|@$I|13|J|14|K|L]]|9|@]|A|$]]|$1|M|3|N|5|D|7|15|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|16|8|@]|9|@$I|17|J|18|1|19]]|A|$]]|$1|Q|3|R|5|6|7|1A|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|Z]]]]

<p>A trick in css:</p>
<pre><code>width: calc(100%/2);
</code></pre>
<p>Put this inside <strong>Card</strong>:</p>
<pre><code>.Cards{
  ...
  .Card{
    width: calc(100%/2);
    ...
  }
}
</code></pre>
<p>More on calc: <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/calc()" rel="nofollow noreferrer">https://developer.mozilla.org/en-US/docs/Web/CSS/calc()</a></p>
<p>New approach, which is also easy to read.</p>


<pre><code>.Cards {
    justify-content: center;
    display: flex;
    align-items: center;
    text-align: center;
    align-items: center;
    flex-direction: row;
    flex-wrap: wrap;
    .Card {
        text-align: center;
        padding: 20px;
        flex: 1 0 50%; // !
    }
}
</code></pre>
<p>I'm trying to get this flexbox to set a maximum of 2 children per row. Even with <code>flex: 1 0 50%</code>, I'm getting this:</p>
<p><a href="https://i.stack.imgur.com/7z5RS.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7z5RS.png" alt="site" /></a>
<a href="https://i.stack.imgur.com/V0eL8.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/V0eL8.png" alt="enter image description here" /></a></p>
<p>Why is this happening? Even adding <code>width: 50px</code> doesn't work.</p>


Set the maximum amount of children in a flexbox

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

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.Cards {    justify-content: center;    display: flex;    align-items: center;    text-align: center;    align-items: center;    flex-direction: row;    flex-wr...

问设置flexbox中的最大子项数量
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