在网格布局内插入全宽块

Question

我正在创建 Google 图片前一段时间的页面布局。在所选图像下有一个图像网格，其中包含大的完整部分。我很好奇是否可以用 css 属性标记此页面disaply: grid。

起初我制作了三列的容器。一切都很好：

.container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-gap: 20px;
}

.item {
  border: 1px solid;
  height: 20px;
}

<div class="container">
  <div class="item"></div>  
  <div class="item"></div>  
  <div class="item"></div>  
  <div class="item"></div>  
</div>

但我不知道如何在这个网格内插入描述块。我不确定这是否可能。我将通过 切换描述display: none | block。图像和行数未知。

.container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-gap: 20px;
}

.item {
  border: 1px solid;
  height: 20px;
}

.item__description {
  border: 1px solid red;
  height: 10px;
}

<div class="container">
  <div class="item">
    <div class="item__description">Description of the first item</div>
  </div>
  <div class="item"></div>
  <div class="item"></div>  
  <div class="item"></div>
  <div class="item__description">Description of the last item. No matter where to place this description: inside or outside 'item' block</div>
</div>

这个想法是在不进行任何 js DOM 操作的情况下创建此布局。

Answer 1

设置grid-auto-flow: row dense;在 上.container。移动.item__description项目的外部，然后将其放置grid-column: 1 / span 3;在其上。

.container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-flow: row dense;
  grid-gap: 20px;
}

.item {
  border: 1px solid;
  height: 20px;
}

.item__description {
  grid-column: 1 / -1;
  border: 1px solid red;
  height: 20px;
}

<div class="container">
  <div class="item"></div>
  <div class="item__description">Description of the first item</div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item__description">Description of the last item. No matter where to place this description: inside or outside 'item' block</div>
</div>

这也适用于显示切换（悬停一个项目）：

.container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-flow: row dense;
  grid-gap: 20px;
}

.item {
  border: 1px solid;
  height: 20px;
}

.item__description {
  display: none;
  grid-column: 1 / -1;
  border: 1px solid red;
  height: 20px;
}

.item:hover + .item__description {
  display: block;
}

<div class="container">
  <div class="item">Hover Me 1</div>
  <div class="item__description">Description of the item 1</div>
  <div class="item">Hover Me 2</div>
  <div class="item__description">Description of the item 2</div>
  <div class="item">Hover Me 3</div>
  <div class="item__description">Description of the item 3</div>
  <div class="item">Hover Me 4</div>
  <div class="item__description">Description of the item 4</div>
</div>