使Flexbox中的项目占用所有垂直和水平空间

Question

我目前在容器中有元素,每个元素都包含一个图像.我想使用flexbox将它们分配到四个角或容器中.图像水平分布正确,但不会垂直占用所有可用空间.

这就是目前的样子:

这是我的标记:

<div class="container">
    <div class="photo">
        <img src="https://placehold.it/180">
    </div>
    <div class="photo">
        <img src="https://placehold.it/180">
    </div>
    <div class="photo">
        <img src="https://placehold.it/180">
    </div>
    <div class="photo">
        <img src="https://placehold.it/180">
    </div>
</div>

而我的(S)CSS:

div.container {
    width: 405px;
    height: 405px;
    background: rgba(0,0,0,0.1);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;

    div.photo {
        width: 180px;
        height: 180px;
        overflow: hidden;
        border-radius: 5px;

        img {
            height: 100%;
        }                   
    }
}

Answer 1

适用align-content: space-between于您flexbox的操作(当然假设您有足够的可用空间进行垂直对齐) - 请参阅下面的演示:

align-content属性修改了flex-wrap属性的行为.它与align-items类似,但它不是对齐flex项,而是对齐flex线.(来源:W3schools)

div.container {
  width: 405px;
  height: 405px;
  background: rgba(0, 0, 0, 0.1);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-content: space-between;
}
div.container div.photo {
  width: 180px;
  height: 180px;
  overflow: hidden;
  border-radius: 5px;
}
img {
  height: 100%;
}

<div class="container">
  <div class="photo">
    <img src="https://placehold.it/180">
  </div>
  <div class="photo">
    <img src="https://placehold.it/180">
  </div>
  <div class="photo">
    <img src="https://placehold.it/180">
  </div>
  <div class="photo">
    <img src="https://placehold.it/180">
  </div>
</div>