image-overlay-hover.md

标题	标签
image-overlay-hover(悬浮覆盖图片)	visual,animation(视觉的，动画)

显示图像叠加效果对悬停。

• 使用:before 和:after 伪元素用于叠加层的顶部和底栏。设置其不透明度，转换和过渡以产生预期的效果。
• 使用<figcaption>进行覆盖文本。 设置显示：Flex，Flex 方向：列和合理性：中心将文本集中到图像中。
• 使用：悬浮伪类:hover 来更新所有元素的不透明度和转换，并显示覆盖层。

<figure class="hover-box">
  <img
    src="https://www.eveningwater.com/img/segmentfault/10.png"
    alt="图片加载中"
    class="hover-box-img"
  />
  <figcaption class="hover-box-content">
    <h3 class="hover-box-content-title">Lorem <br />Ipsum</h3>
  </figcaption>
</figure>

.hover-box {
  background-color: #000;
  color: #fff;
  display: inline-block;
  margin: 8px;
  max-width: 320px;
  min-width: 240px;
  overflow: hidden;
  position: relative;
  width: 100%;
  text-align: center;
}
.hover-box * {
  box-sizing: border-box;
  transition: all 0.45s ease;
}
.hover-box::before,
.hover-box::after {
  content: '';
  background-color: rgba(0, 0, 0, 0.5);
  border-top: 32px solid rgba(0, 0, 0, 0.5);
  border-bottom: 32px solid rgba(0, 0, 0, 0.5);
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  transition: all 0.3s ease;
  z-index: 1;
  opacity: 0;
  transform: scaleY(2);
}
.hover-box .hover-box-img {
  vertical-align: top;
  max-width: 100%;
  backface-visibility: hidden;
}
.hover-box .hover-box-content {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  align-items: center;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1.1em;
  opacity: 0;
  z-index: 2;
  transition-delay: 0.1s;
  font-size: 24px;
  font-family: sans-serif;
  font-weight: 400;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.hover-box:hover::before,
.hover-box:hover::after {
  transform: scale(1);
  opacity: 1;
}
.hover-box:hover > .hover-box-img {
  opacity: 0.7;
}
.hover-box:hover .hover-box-content {
  opacity: 1;
}

应用场景

结果如下:

<iframe src="codes/css/html/image-overlay-hover.html"></iframe>