响应式列表组项目从两列合二为一

Question

我正在使用 Bootstrap 4 并创建了一个项目列表并将其分成两列（见图）。当我将网站缩小到移动大小的屏幕时，它会显示如下：

但我希望当我将它缩小到移动尺寸（响应式）时，它只在一列中显示给我。我希望它是这样的：

这是我的代码：

.list-group {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-auto-flow: column;
}

li {
  grid-column: 1;
}

li:nth-last-child(-n+7) {
  grid-column: 2;
}

<section class="info2">
  <div class="container">
    <div class="row">
      <div class="col-lg-12 text-center">
        <h2 class="section-heading">Lorem ipsum dolor sit amet.</h2>
      </div>
    </div>
    <ul class="list-group list-group-flush">
      <li class="list-group-item list-group-item-action">
        Lorem ipsum dolor sit amet.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem ipsum dolor sit.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem, ipsum dolor.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem ipsum dolor sit amet.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem, ipsum dolor.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem ipsum dolor sit.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem ipsum dolor sit amet consectetur.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem, ipsum dolor.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem ipsum dolor sit amet.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem, ipsum dolor.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem ipsum, dolor sit amet consectetur adipisicing.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem, ipsum dolor.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem ipsum dolor sit.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem, ipsum.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem ipsum dolor sit amet.
        <i class="fas fa-check"></i>
      </li>
    </ul>
  </div>

即使这是一个初学者的问题，我也非常感谢您的帮助。

Answer 1

您可以只添加几个 media 查询，以便 CSS 仅应用于特定尺寸的设备。

为了让它在移动设备上成为一列，在更大的设备上成为两列，您需要将创建的 CSS 放在 media 查询中以使其成为两列这个'。

.list-group {
  display: grid;
  grid-template-columns: 1fr;
}

@media screen and (min-width:767px) {
.list-group {
  grid-template-columns: repeat(2, 1fr);
  grid-auto-flow: column;
}

li {
  grid-column: 1;
}

li:nth-last-child(-n+7) {
  grid-column: 2;
}

}

<section class="info2">
  <div class="container">
    <div class="row">
      <div class="col-lg-12 text-center">
        <h2 class="section-heading">Lorem ipsum dolor sit amet.</h2>
      </div>
    </div>
    <ul class="list-group list-group-flush">
      <li class="list-group-item list-group-item-action">
        Lorem ipsum dolor sit amet.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem ipsum dolor sit.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem, ipsum dolor.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem ipsum dolor sit amet.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem, ipsum dolor.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem ipsum dolor sit.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem ipsum dolor sit amet consectetur.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem, ipsum dolor.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem ipsum dolor sit amet.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem, ipsum dolor.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem ipsum, dolor sit amet consectetur adipisicing.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem, ipsum dolor.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem ipsum dolor sit.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem, ipsum.
        <i class="fas fa-check"></i>
      </li>
      <li class="list-group-item list-group-item-action">
        Lorem ipsum dolor sit amet.
        <i class="fas fa-check"></i>
      </li>
    </ul>
  </div>

（运行代码 sn -p 查看移动布局，然后查看全屏查看更大的设备布局）