为什么在2D变换期间文本会变得模糊和抖动

Question

我想让这张卡在悬停时缩放（包括其中的元素），但文本在转换过程中摇摆/抖动（当你悬停卡片时）并在缩放期间和之后变得模糊（有时，某些比率比其他比例更高） ，我认为是由于子像素值四舍五入）。

如何在转型过程中消除这种摇晃和模糊？

• 我不关心IE浏览器，我只想让它在最新的Chrome中运行。
• 它似乎是由transition财产造成的。

Codepen＃1：https://codepen.io/x84733/pen/yEpYxX

.scalable {
  transition: 0.3s ease-in-out;
  box-shadow: 0 6px 10px rgba(0,0,0,0.14);
}
.scalable:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 40px rgba(0,0,0,0.25);  
}

.card {
  width: 100%;
  background: white;
  padding: 20px;
}

body {
  width: 50%; 
  height: 100%; 
  background: #999;
  padding: 20px;
}

<div class="card scalable">
  <div>here's some description</div>
</div>

更新：

我刚刚发现，当你以编程方式为它设置动画时，它不会抖动/抖动：

我能以某种方式使用JS吗？

Codepen：https://codepen.io/anon/pen/LqXwOb?editors=1100

.anim {
  animation: scale 0.3s ease-in-out infinite alternate;
}

@keyframes scale {
  to { transform: scale(1.05) }
}

.scalable {
  transition: 0.3s ease-in-out;
  box-shadow: 0 6px 10px rgba(0,0,0,0.14);
}
.scalable:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 40px rgba(0,0,0,0.25);  
}

.card {
  width: 100%;
  background: white;
  padding: 20px;
}

body {
  width: 50%; 
  height: 100%; 
  background: #999;
  padding: 20px;
}

<div class="el anim card scalable">
  <div>here's some description</div>
</div>

Answer 1

您可以考虑使用带有透视的translateZ，而不是使用比例尺。确保最初定义透视图以避免在快速移动光标时产生不良影响：

.scalable{
  transition: 0.3s ease-in-out;
  box-shadow: 0 6px 10px rgba(0,0,0,0.14);
  transform:perspective(100px);
}

.scalable:hover {
  transform:perspective(100px) translateZ(5px);
  box-shadow: 0 8px 40px rgba(0,0,0,0.25);  
}

.card {
  width: 100%;
  background: white;
  padding: 20px;
}

body {
  width: 50%; 
  height: 100%; 
  background: #999;
  padding: 20px;
}

<div class="card scalable">
  <div>here's some description</div>
</div>

减少模糊效果的一个想法是从负翻译开始，然后回到0：

.scalable{
  transition: 0.3s ease-in-out;
  box-shadow: 0 6px 10px rgba(0,0,0,0.14);
  transform:perspective(100px) translateZ(-5px);
}

.scalable:hover {
  transform:perspective(100px) translateZ(0px);
  box-shadow: 0 8px 40px rgba(0,0,0,0.25);  
}

.card {
  width: 100%;
  background: white;
  padding: 25px;
}

body {
  width: 50%; 
  height: 100%; 
  background: #999;
  padding: 20px;
}

<div class="card scalable">
  <div>here's some description</div>
</div>

Answer 2

还要将原点从100％添加到104％。这样可以防止跳跃和模糊的最终结果

.scalable {
  backface-visibility: hidden;
  transition: all 0.3s ease-in-out;
  transform-origin: 100% 104%;
}

.scalable:hover {
  backface-visibility: hidden;
  transform: scale(1.04);  
}

干杯!

Answer 3

用javascript？

const el = document.querySelector("#parent");
const text = document.querySelector("#text");

let i = 0;

el.addEventListener("mouseover",function(){
    this.style.transform = "scale(1.05)";
})
el.addEventListener("mouseout",function(){
    this.style.transform = "scale(1.00)";
  el.style.boxShadow = "0 8px 40px rgba(0,0,0,0.25);"
})

.scalable {
  transition: 0.3s ease-in-out;
  box-shadow: 0 6px 10px rgba(0,0,0,0.14);
}

.card {
  width: 100%;
  background: white;
  padding: 20px;
}

body {
  width: 50%; 
  height: 100%; 
  background: #999;
  padding: 20px;
}

<div id="parent" class="card scalable">
  <div id="text">here's some description</div>
</div>