缩放元素(和背景)，但不缩放内容

Question

我试图将鼠标悬停在一个元素上，使其大几个百分点，但我希望标题和里面的内容保持不变。如果我只是将scale(1.05)添加到元素中，那么内容也会缩放。如果我尝试用scale(0.95)对内部元素进行反缩放，大小将与原始元素相同，但位置将不相同：

.container {
  display: block;
  width: 100%;
  padding: 50px;
}
.element {
  height: 562px;
  width: 590px;
  display: inline-block;
  position: relative;
  -webkit-transition: all 300ms ease-in-out;
  transition: all 300ms ease-in-out;
  background-image: url(https://images.unsplash.com/photo-1451906278231-17b8ff0a8880?crop=entropy&fit=crop&fm=jpg&h=975&ixjsv=2.1.0&ixlib=rb-0.3.5&q=80&w=1925);
  background-size: cover;
  background-position: center center;
}
.title {
  font-size: 45px;
  line-height: 48px;
  bottom: 10%;
  position: absolute;
  margin: 0 25px;
  color: #fff;
  text-shadow: 0 2px 0 rgba(0, 0, 0, 0.14);
  font-weight: 700;
  font-family: sans-serif;
  -webkit-transition: all 300ms ease-in-out;
  transition: all 300ms ease-in-out;
}
.element:hover {
  transform: scale(1.05);
  z-index: 10;
}
.element:hover .title {
  transform: scale(0.95);
}

<div class="container">
  <div class="element">
    <div class="title">This is the big title.</div>
  </div>
</div>

里面的内容是绝对放置的，所以我可能必须通过指定bottom和left属性来修复它，但我认为内部元素上仍然会有一些转换。

有办法解决这个问题吗？只是为了在不影响内容的情况下扩展元素？

Answer 1

将背景移动到单独的层。

.container {
  position: relative;
  display: block;
  width: 300px;
  height: 300px;
  padding: 50px;
  margin: 50px auto;
}
.background {
  position: absolute;
  left: 0;
  top: 0;
  
  height: 100%;
  width: 100%;
  
  transition: all 300ms ease-in-out;
  background: url(https://images.unsplash.com/photo-1451906278231-17b8ff0a8880?crop=entropy&fit=crop&fm=jpg&h=975&ixjsv=2.1.0&ixlib=rb-0.3.5&q=80&w=1925) center center;
  background-size: cover;
}
.title {
  position: absolute;
  bottom: 10%;
  left: 0;
  margin: 0 25px;
  
  font-size: 45px;
  line-height: 48px;  
  color: #fff;
  font-weight: 700;
  font-family: sans-serif;
}
.container:hover .background {
  transform: scale(1.05);
}

<div class="container">
  <div class="background"></div>
  <div class="title">This is the big title.</div>
</div>

Answer 2

由于element的子级会受到影响，因此使用伪元素可能是一个不错的选择。

.container {
  display: block;
  width: 100%;
  padding: 50px;
}
.element {
  position: relative;
  height: 562px;
  width: 590px;
  display: inline-block;
}
.element:before {
  content: ' ';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 100%;
  display: inline-block;
  -webkit-transition: all 300ms ease-in-out;
  transition: all 300ms ease-in-out;
  background-image: url(https://images.unsplash.com/photo-1451906278231-17b8ff0a8880?crop=entropy&fit=crop&fm=jpg&h=975&ixjsv=2.1.0&ixlib=rb-0.3.5&q=80&w=1925);
  background-size: cover;
  background-position: center center;
}
.title {
  font-size: 45px;
  line-height: 48px;
  bottom: 10%;
  position: absolute;
  margin: 0 25px;
  color: #fff;
  text-shadow: 0 2px 0 rgba(0, 0, 0, 0.14);
  font-weight: 700;
  font-family: sans-serif;
  -webkit-transition: all 300ms ease-in-out;
  transition: all 300ms ease-in-out;
}
.element:hover:before {
  transform: scale(1.05);
}

<div class="container">
  <div class="element">
    <div class="title">This is the big title.</div>
  </div>
</div>

如果您仍然需要element来添加其他元素等，这可能是的第二个选项

.container {
  display: block;
  width: 100%;
  padding: 50px;
}
.element {
  position: relative;
  height: 562px;
  width: 590px;
  display: inline-block;
}
.inner {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 100%;
  display: inline-block;
  -webkit-transition: all 300ms ease-in-out;
  transition: all 300ms ease-in-out;
  background-image: url(https://images.unsplash.com/photo-1451906278231-17b8ff0a8880?crop=entropy&fit=crop&fm=jpg&h=975&ixjsv=2.1.0&ixlib=rb-0.3.5&q=80&w=1925);
  background-size: cover;
  background-position: center center;
}
.title {
  font-size: 45px;
  line-height: 48px;
  bottom: 10%;
  position: absolute;
  margin: 0 25px;
  color: #fff;
  text-shadow: 0 2px 0 rgba(0, 0, 0, 0.14);
  font-weight: 700;
  font-family: sans-serif;
  -webkit-transition: all 300ms ease-in-out;
  transition: all 300ms ease-in-out;
}
.element:hover .inner {
  transform: scale(1.05);
}

<div class="container">
  <div class="element">
    <div class="inner"></div>
    <div class="title">This is the big title.</div>
  </div>
</div>