悬停 object-fit 时的动画：包含 <img>

Question

鼠标悬停时，当 img 未使用 object-fit 时，img 下方的动画 span 标签工作正常：包含如下所示：

body {
  height: 100%;
  width: 100%;
  margin: 0
}

.container {
  max-width: 600px;
  position: relative;
  text-align: center;
  width: 100%;
}

.product {
  position: relative;
  width: 150px;

}

img.content {
  background: white;
  height: auto;
  margin: 8%;
  position: relative;
  width: 84%;
  vertical-align: middle;
  z-index: 5000;
}

.product:hover .effect-1,
.product:hover .effect-2 {
  display: block;
}

.effect-1,
.effect-2 {
  border-radius: 30%;
  display: none;
  mix-blend-mode: multiply;
  height: 84%;
  opacity: 1;
  position: absolute;
  width: 84%;
  z-index: 3000;
}

.effect-1 {
  animation: rotate 1.8s linear infinite;
  background: cyan;
}

.effect-2 {
  animation: rotate 1.2s linear reverse infinite;
  background: #e7a9ff;
}

.placeholder {
  width: 84%;
  height: auto;
  visibility: hidden;
}

@keyframes rotate {
  0% {
    top: 0;
    left: 8%;
  }
  25% {
    top: 8%;
    left: 0%;
  }
  50% {
    top: 16%;
    left: 8%;
  }
  75% {
    top: 8%;
    left: 16%;
  }
  100% {
    top: 0;
    left: 8%;
  }
}

<body>
    <div class="container">
      <p>Hover image please</p>
      <div class="product">
          <img class="content" src="http://www.petsworld.in/blog/wp-content/uploads/2014/09/Golden-Retriever-Puppies-in-basket.jpg">
          <span class="effect-1"><img class="placeholder" src="http://www.petsworld.in/blog/wp-content/uploads/2014/09/Golden-Retriever-Puppies-in-basket.jpg"></span>
          <span class="effect-2"><img class="placeholder" src="http://www.petsworld.in/blog/wp-content/uploads/2014/09/Golden-Retriever-Puppies-in-basket.jpg"></span>
      </div>
    </div>
</body>

但是当 img 使用 object-fit 时：包含动画跨度占据整个区域：

body {
  height: 100%;
  margin: 0;
}

.container {
  max-width: 600px;
  position: relative;
  text-align: center;
  width: 100%;
  height: 100%;
  min-height: 700px;
}

.product {
  height: 100%;
  position: absolute;
}
.content {
  background: white;
  margin: 8%;
  position: relative;
  width: 84%;
  height: 100%;
  vertical-align: middle;
  z-index: 5000;
  object-fit: contain;
}

.product:hover .effect-1,
.product:hover .effect-2 {
  display: block;
}

.effect-1,
.effect-2 {
  border-radius: 30%;
  display: none;
  mix-blend-mode: multiply;
  height: 84%;
  opacity: 1;
  position: absolute;
  width: 84%;
  z-index: 3000;
}

.effect-1 {
  animation: rotate 1.8s linear infinite;
  background: cyan;
}

.effect-2 {
  animation: rotate 1.2s linear reverse infinite;
  background: #e7a9ff;
}

.placeholder {
  width: 84%;
  height: auto;
  visibility: hidden;
}

@keyframes rotate {
  0% {
    top: 0;
    left: 8%;
  }
  25% {
    top: 8%;
    left: 0%;
  }
  50% {
    top: 16%;
    left: 8%;
  }
  75% {
    top: 8%;
    left: 16%;
  }
  100% {
    top: 0;
    left: 8%;
  }
}

<body>
    <div class="container">
      <div class="product">
        <span class="effect-1"><img class="placeholder" src="http://www.petsworld.in/blog/wp-content/uploads/2014/09/Golden-Retriever-Puppies-in-basket.jpg"></span>
        <span class="effect-2"><img class="placeholder" src="http://www.petsworld.in/blog/wp-content/uploads/2014/09/Golden-Retriever-Puppies-in-basket.jpg"></span>
          <img class="content" src="http://www.petsworld.in/blog/wp-content/uploads/2014/09/Golden-Retriever-Puppies-in-basket.jpg">
      </div>
    </div>
</body>

在使用 object-fit: contain 时，如何使这些悬停效果仅适用于图像周围的区域（而不是整个区域）？图片必须使用 object-fit 保持垂直居中。

Answer 1

这是你想要的吗？图像在动画 div 之间居中。

你给出的第二个例子中你的图片变大的原因是你在那里改变了你的CSS。您更改了 .container、.product 等的 height/width 值，因此子元素显示得更大，因为它们继承了这些值。

我在 .container 中更改了 max-width 和 min-height 以减小整体大小。 .content 的宽度应小于 effect divs

的宽度

html {
  width: 100%;
  height: 100%;
}

body {
  width: 100%;
  height: 100%;
  margin: 0;
}

.container {
  max-width: 300px;
  /* This is new */
  position: relative;
  text-align: center;
  width: 100%;
  height: 100%;
  min-height: 300px;
  /* This is new */
}

.product {
  height: 100%;
  position: absolute;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.content {
  display: flex;
  align-self: center;
  background: white;
  margin: 0 auto;
  position: relative;
  width: 65%;
  /* This is new */
  object-fit: contain;
  /* This is new */
}

.product:hover .effect-1,
.product:hover .effect-2 {
  display: flex;
}

.effects {
  position: absolute;
}

.effect-1,
.effect-2 {
  border-radius: 30%;
  display: flex;
  mix-blend-mode: multiply;
  height: 84%;
  opacity: 1;
  position: absolute;
  width: 84%;
  z-index: 3000;
  visibility: visible;
}

.effect-1 {
  animation: rotate 1.8s linear infinite;
  background: cyan;
}

.effect-2 {
  animation: rotate 1.2s linear reverse infinite;
  background: #e7a9ff;
}

.placeholder {
  width: 84%;
  height: auto;
  visibility: hidden;
  object-fit: contain;
  display: flex;
  margin: 0 auto;
  align-self: center;
  position: relative;
}

@keyframes rotate {
  0% {
    top: 0;
    left: 8%;
  }
  25% {
    top: 8%;
    left: 0%;
  }
  50% {
    top: 16%;
    left: 8%;
  }
  75% {
    top: 8%;
    left: 16%;
  }
  100% {
    top: 0;
    left: 8%;
  }
}

<body>
  <div class="container">
    <div class="product">
      <span class="effects">
            <img class="placeholder" src="http://www.petsworld.in/blog/wp-content/uploads/2014/09/Golden-Retriever-Puppies-in-basket.jpg">
            <span class="effect-1"></span>
      <span class="effect-2"></span>
      </span>
      <img class="content" src="http://www.petsworld.in/blog/wp-content/uploads/2014/09/Golden-Retriever-Puppies-in-basket.jpg">
    </div>
  </div>
</body>

悬停 object-fit 时的动画：包含 <img>

Animation when hovering object-fit: contain <img>

html

css

keyframe

css-animations

object-fit