如果弹性儿童的宽度总计100％的容器，则如何在弹性儿童之间增加空间

Question

我有一个带有4个孩子的Flex容器，具体取决于屏幕的宽度，我希望每行显示1,2或3个帖子。我试图将帖子的宽度设置为100％，50％和33.3％，具体取决于视图，但我的问题是 - 如果帖子总计高达100％，那么我该如何在帖子之间添加间距？目前，他们溢出了下一行。

我已经在下面包含我的代码，但是我希望它看起来与此处的帖子部分相似：https：//carney.co/daily-carnage/。

我尝试添加边距和填充，但这会导致帖子溢出到下一行。

  .container {
  max-width: 1140px;
  padding-left: 2rem;
  padding-right: 2rem;
  margin-right: auto;
  margin-left: auto;
  box-sizing: border-box;
  display: flex;
  flex-wrap: wrap;
}
article {
  box-shadow: 0 0 0.6rem 0.25rem rgba(0, 0, 0, .1);
  margin: 2rem 0;
  width: 100%;
}
.post-meta-and-title {
  padding: 2rem 1.5rem 0;
}
.post-meta {
  font-size: .7rem;
}
.post-title {
  font-size: 1.25rem;
}
.post-description {
  padding: 0 1.5rem;
}
footer {
  position: relative;
  padding: 0 1.5rem 2rem;
}
.btn {
  background-image: linear-gradient(150deg, #ffb064 -1%, #ff6496 101%);
  color: white;
  position: absolute;
  right: -1rem;
  bottom: -1rem;
  padding: .5rem 2rem;
  line-height: 1.5;
}
.author-name {
  display: inline;
}
span {
  padding: 0 .4rem;
}
@media (min-width: 810px) {
  .container {
    padding: 0;
  }
  article {
    width: 50%;
  }
  @media (min-width: 1200px) {
    article {
      width: 33.3%;
      margin-right: 3rem;
    }
  }

<section class="container">
  <article>
    <header class="post-meta-and-title">
      <div class="post-meta">
        <time datetime="2019-05-09 20:00">May 9, 2019</time>
        <p class="author-name"><span>|</span>
          <a href="https://carney.co/author/adamkunes/" rel="author">Adam Kunes</a>
        </p>
      </div>
      <h2><a class="post-title" href="#">Sky High WiFi</a></h2>
    </header>
    <p class="post-description">plus – better landing pages, heatmaps, and Starbucks.</p>
    <footer>
      <a href="#" class="btn">READ MORE</a>
    </footer>
  </article>
  <article>
    <header class="post-meta-and-title">
      <div class="post-meta">
        <time datetime="2019-05-09 20:00">May 9, 2019</time>
        <p class="author-name"><span>|</span>
          <a href="https://carney.co/author/adamkunes/" rel="author">Adam Kunes</a>
        </p>
      </div>
      <h2><a class="post-title" href="#">Are you afraid of clowns?</a></h2>
    </header>
    <p class="post-description">plus – tech overload, productivity, and Tom Brady.</p>
    <footer>
      <a href="#" class="btn">READ MORE</a>
    </footer>
  </article>
  <article>
    <header class="post-meta-and-title">
      <div class="post-meta">
        <time datetime="2019-05-09 20:00">May 9, 2019</time>
        <p class="author-name"><span>|</span>
          <a href="https://carney.co/author/adamkunes/" rel="author">Adam Kunes</a>
        </p>
      </div>
      <h2><a class="post-title" href="#">It's time to get real folks</a></h2>
    </header>
    <p class="post-description">plus – sell more event tickets, and faster feedback.</p>
    <footer>
      <a href="#" class="btn">READ MORE</a>
    </footer>
  </article>
  <article>
    <header class="post-meta-and-title">
      <div class="post-meta">
        <time datetime="2019-05-09 20:00">May 9, 2019</time>
        <p class="author-name"><span>|</span>
          <a href="https://carney.co/author/adamkunes/" rel="author">Adam Kunes</a>
        </p>
      </div>
      <h2><a class="post-title" href="#">Burger King goes plant-based</a></h2>
    </header>
    <p class="post-description">plus – how to create content for boring industries.</p>
    <footer>
      <a href="#" class="btn">READ MORE</a>
    </footer>
  </article>
</section>

我想要1,2或根据屏幕尺寸显示每行3个帖子。这些帖子的宽度应设置为100％，50％和33.3％，但在其中也应该有空间，例如https://carney.co/daily-carnage/。

Answer 1

您可以在.container上使用合理性，并计算要减去所需间距的宽度。

.container {
  max-width: 1140px;
  padding-left: 2rem;
  padding-right: 2rem;
  margin-right: auto;
  margin-left: auto;
  box-sizing: border-box;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between; /* ADDED */
}
article {
  box-shadow: 0 0 0.6rem 0.25rem rgba(0, 0, 0, .1);
  margin: 2rem 0;
  width: 100%;
}
.post-meta-and-title {
  padding: 2rem 1.5rem 0;
}
.post-meta {
  font-size: .7rem;
}
.post-title {
  font-size: 1.25rem;
}
.post-description {
  padding: 0 1.5rem;
}
footer {
  position: relative;
  padding: 0 1.5rem 2rem;
}
.btn {
  background-image: linear-gradient(150deg, #ffb064 -1%, #ff6496 101%);
  color: white;
  position: absolute;
  right: -1rem;
  bottom: -1rem;
  padding: .5rem 2rem;
  line-height: 1.5;
}
.author-name {
  display: inline;
}
span {
  padding: 0 .4rem;
}
@media (min-width: 810px) {
  .container {
    padding: 0;
  }
  article {
    width: calc(50% - 4rem);  /* USE CALC */
  }
  @media (min-width: 1200px) {
    article {
      width: calc(33.3% - 4rem);  /* USE CALC */
    }
  }

<section class="container">
  <article>
    <header class="post-meta-and-title">
      <div class="post-meta">
        <time datetime="2019-05-09 20:00">May 9, 2019</time>
        <p class="author-name"><span>|</span>
          <a href="https://carney.co/author/adamkunes/" rel="author">Adam Kunes</a>
        </p>
      </div>
      <h2><a class="post-title" href="#">Sky High WiFi</a></h2>
    </header>
    <p class="post-description">plus – better landing pages, heatmaps, and Starbucks.</p>
    <footer>
      <a href="#" class="btn">READ MORE</a>
    </footer>
  </article>
  <article>
    <header class="post-meta-and-title">
      <div class="post-meta">
        <time datetime="2019-05-09 20:00">May 9, 2019</time>
        <p class="author-name"><span>|</span>
          <a href="https://carney.co/author/adamkunes/" rel="author">Adam Kunes</a>
        </p>
      </div>
      <h2><a class="post-title" href="#">Are you afraid of clowns?</a></h2>
    </header>
    <p class="post-description">plus – tech overload, productivity, and Tom Brady.</p>
    <footer>
      <a href="#" class="btn">READ MORE</a>
    </footer>
  </article>
  <article>
    <header class="post-meta-and-title">
      <div class="post-meta">
        <time datetime="2019-05-09 20:00">May 9, 2019</time>
        <p class="author-name"><span>|</span>
          <a href="https://carney.co/author/adamkunes/" rel="author">Adam Kunes</a>
        </p>
      </div>
      <h2><a class="post-title" href="#">It's time to get real folks</a></h2>
    </header>
    <p class="post-description">plus – sell more event tickets, and faster feedback.</p>
    <footer>
      <a href="#" class="btn">READ MORE</a>
    </footer>
  </article>
  <article>
    <header class="post-meta-and-title">
      <div class="post-meta">
        <time datetime="2019-05-09 20:00">May 9, 2019</time>
        <p class="author-name"><span>|</span>
          <a href="https://carney.co/author/adamkunes/" rel="author">Adam Kunes</a>
        </p>
      </div>
      <h2><a class="post-title" href="#">Burger King goes plant-based</a></h2>
    </header>
    <p class="post-description">plus – how to create content for boring industries.</p>
    <footer>
      <a href="#" class="btn">READ MORE</a>
    </footer>
  </article>
</section>

Answer 2

我过去所做的是将您的孩子元素包裹在自己的容器中，然后将其宽度为33.3％或其他任何东西，然后给它填充以在实际孩子之间增加空间。除了宽度外，还添加了边距(因此其实际上是33.33％ 20px(。填充不会增加宽度。所以这样的东西也许

另一种可能性是使用宽度计算。所以

width: calc(33.333% - 20px);

只是不要将计算与flex基础使用。IE中很奇怪。