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html - 用css从下到上动画一个div

问题描述

我需要为从下到上的 div 设置动画。情况是这样的：我有一个缩略图，其中包含电影的标题和描述。我想隐藏描述，仅在用户将鼠标悬停在其上时才显示。

我尝试调整容器的高度，但是当值设置为“自动”时，您无法为其设置动画，并且我无法为其提供特定大小，因为每部电影的标题可能会有所不同。许多人可能都知道，您不能使用“底部”和“顶部”属性从底部到顶部进行动画处理。

这是html：

<div class="thumbnail-component">
  <img class="thumbnail-component__background" src="background.jpg" alt="">
  <div class="thumbnail-component__gradient"></div>
  <div class="text">

    <div class="text__content">
        <p class="text__title">The movie title</p>
        <div class="text__separator"></div>
        <p class="text__description">
            Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
        </p>
        <p class="text__author">Published by Author</p>
    </div>
</div>

这是我想要完成的图像：

https://imgur.com/Ddkj5oI

老实说，我完全迷失了，我想我尝试了我所知道的一切。对不起我的英语不太好。

标签： htmlcss

解决方案

在卡片悬停时显示卡片说明

完全灵活且响应迅速
没有硬编码或任意高度，不涉及 JS。

使用 CSS 悬停显示卡片描述

基本上，

  • 将标题翻译为-100%，悬停动画为0
  • 将标题和内容都包装到 DIV 中（即.anim：）
  • translateY .animto +100%，并在悬停时将其动画化为0

在整页中打开示例以查看发生了什么以及它是如何工作的：

/*QuickReset*/*{margin:0;box-sizing:border-box;}

.thumb {
  width: 140px;
  background: #eee;
}

.anim {
  transition: 0.5s;
  transform: translateY(100%);
}

.title {
  color: red;
  transition: 0.5s;
  transform: translateY(-100%);
}

.author {
  color: blue;
}

/* ANIMATE */

.thumb:hover .anim,
.thumb:hover .title {
  transform: translateY(0);
}
<div class="thumb">
  <div class="anim">
    <div class="title">The movie even longer title</div>
    <div class="description">
      Text lenghts of Title and Author or even Description do not matter. They will all perfectly accommodate into .thumb on hover
    </div>
  </div>
  <div class="author">Published by super long some Author</div>
</div>

弹性盒网格！

真实案例的概念证明示例：

/*QuickReset*/

* {
  margin: 0;
  box-sizing: border-box;
}

html {
  height: 100%
}

body {
  min-height: 100%;
  font: 14px/1.4 sans-serif;
}

.grid-3 {
  display: flex;
  flex-flow: row wrap;
}

.thumb {
  display: flex;
  flex-flow: column nowrap;
  position: relative;
  overflow: hidden;
  width: 33.333%;
  color: #fff;
}

.thumb-gradient,
.thumb-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.thumb-gradient {
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.24) 0%, rgba(0, 0, 0, 0.56) 100%);
}

.thumb-anim {
  margin-top: auto;  /* pushes all content to bottom */
  position: relative;
  transition: 0.5s;
  transform: translateY(100%);
}

.thumb-title {
  text-transform: uppercase;
  padding: 20px;
  transition: 0.5s;
  transform: translateY(-100%);
}

.thumb-description {
  padding: 10px 20px;
  transition: 0.5s;
  opacity: 0;
  flex: 1;
}

.thumb-author {
  padding: 20px;
  position: relative;
}


/* ANIMATE */

.thumb:hover .thumb-anim {
  transform: translateY(0);
}

.thumb:hover .thumb-title {
  transform: translateY(0%);
}

.thumb:hover .thumb-description {
  opacity: 1;
}
<div class="grid-3">

  <div class="thumb">
    <img class="thumb-img" src="http://placekitten.com/300/300" alt="Catz!">
    <div class="thumb-gradient"></div>
    <div class="thumb-anim">
      <h3 class="thumb-title">The movie title</h3>
      <p class="thumb-description">
        Text lenghts of Title and Author or even Description do not matter. They will all perfectly accommodate into .thumb on hover
      </p>
    </div>
    <div class="thumb-author">Published by super long some Author</div>
  </div>

  <div class="thumb">
    <img class="thumb-img" src="http://placekitten.com/400/300" alt="Catz!">
    <div class="thumb-gradient"></div>
    <div class="thumb-anim">
      <h3 class="thumb-title">The movie title</h3>
      <p class="thumb-description">
        The row heights are dictated by the tallest in the horizontal group
      </p>
    </div>
    <div class="thumb-author">Published</div>
  </div>

  <div class="thumb">
    <img class="thumb-img" src="http://placekitten.com/230/300" alt="Catz!">
    <div class="thumb-gradient"></div>
    <div class="thumb-anim">
      <h3 class="thumb-title">The movie title a super long title here</h3>
      <p class="thumb-description">
        Lorem ipsum dolor sit amet, consectetur adipisicing elit. Repellendus facilis beatae, numquam aliquam eveniet. Iure porro provident itaque hic quae tempora. Quaerat doloribus dolore facilis similique, soluta asperiores quas sapiente.
      </p>
    </div>
    <div class="thumb-author">Published by super long some Author</div>
  </div>

  <div class="thumb">
    <img class="thumb-img" src="http://placekitten.com/270/300" alt="Catz!">
    <div class="thumb-gradient"></div>
    <div class="thumb-anim">
      <h3 class="thumb-title">The movie title</h3>
      <p class="thumb-description">
        Text lenghts of Title and Author or even Description do not matter. They will all perfectly accommodate into .thumb on hover
      </p>
    </div>
    <div class="thumb-author">Published by super long some Author</div>
  </div>

  <div class="thumb">
    <img class="thumb-img" src="http://placekitten.com/250/370" alt="Catz!">
    <div class="thumb-gradient"></div>
    <div class="thumb-anim">
      <h3 class="thumb-title">The movie title</h3>
      <p class="thumb-description">
        Text lenghts of Title and Author or even Description do not matter. They will all perfectly accommodate into .thumb on hover
      </p>
    </div>
    <div class="thumb-author">Yep. Lorem ipsum dolor sit amet, consectetur adipisicing elit. Cupiditate sequi aspernatur cumque saepe incidunt enim, nihil dolores ipsam numquam architecto velit labore quod laboriosam aliquam distinctio tempora unde ad totam.</div>
  </div>

  <div class="thumb">
    <img class="thumb-img" src="http://placekitten.com/290/340" alt="Catz!">
    <div class="thumb-gradient"></div>
    <div class="thumb-anim">
      <h3 class="thumb-title">The movie title</h3>
      <p class="thumb-description">
        Text lenghts of Title and Author or even Description do not matter. They will all perfectly accommodate into .thumb on hover
      </p>
    </div>
    <div class="thumb-author">Published by super long some Author</div>
  </div>

</div>

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