旋转对象并从顶部缩放

Question

我正在尝试通过在 X 位置从上到下旋转来创建悬停时出现的 div，我还想为其旋转添加一些真实感（宽度DIV 从底部开始应始终为 100%，但应逐渐从 20% 增加到 100% 白色（它正在旋转）。

.img-event-parent{
 position: relative;
}
.img-event-details{
 position: absolute;
 background-color: rgba(0,0,0,0.8);
 left: 0px;
 right: 0px;
 top: 0px;
 height: 100%;
 transform: rotateX(90deg);
 transform-style: preserve-3d;
    -webkit-transform: rotateX(90deg);
 transform-origin: bottom;
    transition: all 3s;
}
.img-event-parent:hover .img-event-details{
 transform: rotateX(0deg); 
}

<div class="img-event">
    <div class="img-event-parent img-parent">
      <a href="#">
      <img src="https://images.pexels.com/photos/20787/pexels-photo.jpg?auto=compress&cs=tinysrgb&h=350" alt="">
    </a>
    <div class="img-event-details">
      <a href="#" class="slick-desc"><?=$key->post_title?></a>
    </div>
  </div>
</div>

上面的代码片段旋转了 img-event-details div，但我不知道如何只从顶部调整 div 的宽度（如上图所示）在旋转时。

Answer 1

添加一些perspective:

.img-event-parent {
  position: relative;
  display: inline-block;
  perspective: 200px; /*Added this*/
  perspective-origin: bottom; /*Added this*/
}

.img-event-parent img {
  display: block;
}

.img-event-details {
  position: absolute;
  background-color: rgba(0, 0, 0, 0.8);
  left: 0px;
  right: 0px;
  top: 0px;
  height: 100%;
  transform: rotateX(90deg);
  transform-style: preserve-3d;
  transform-origin: bottom;
  transition: all 3s;
}

.img-event-parent:hover .img-event-details {
  transform: rotateX(0deg);
}

<div class="img-event">
  <div class="img-event-parent img-parent">
    <a href="#">
      <img src="https://images.pexels.com/photos/20787/pexels-photo.jpg?auto=compress&cs=tinysrgb&h=300" alt="">
    </a>
    <div class="img-event-details">
      <a href="#" class="slick-desc">Some text</a>
    </div>
  </div>
</div>

旋转对象并从顶部缩放

Rotate an object and scale it from the top

css

rotation

css-transitions

css-transforms