Html 背景图像转换在Safari中不起作用

在悬停状态下，我尝试使用CSS转换来交换背景图像。然而，在Safari中，图像在动画过程中会收缩，我不知道为什么

.icon {
  background-color: white;
  width: 100px;
  height: 100px;
  background-image: url(data:image/svg+xml;base64,PHN2ZyBpZD0iTGF5ZXJfMSIgZGF0YS1uYW1lPSJMYXllciAxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCA4MS44OSA4MS44OSI+PGRlZnM+PHN0eWxlPi5jbHMtMXtmaWxsOm5vbmU7c3Ryb2tlOiM4YjkyYTE7c3Ryb2tlLW1pdGVybGltaXQ6MTA7c3Ryb2tlLXdpZHRoOjZweDt9PC9zdHlsZT48L2RlZnM+PHRpdGxlPmljb24tc2VhcmNoPC90aXRsZT48Y2lyY2xlIGNsYXNzPSJjbHMtMSIgY3g9IjM1LjU5IiBjeT0iMzUuNTkiIHI9IjMyLjU5Ii8+PGxpbmUgY2xhc3M9ImNscy0xIiB4MT0iNTguNjMiIHkxPSI1OC42MyIgeDI9Ijc5Ljc3IiB5Mj0iNzkuNzciLz48L3N2Zz4=);
  background-size: 14px 14px;
  background-repeat: no-repeat;
  transition: all 1s;
}

.icon:hover {
    background-image: url(data:image/svg+xml;base64,PHN2ZyBpZD0iTGF5ZXJfMSIgZGF0YS1uYW1lPSJMYXllciAxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCA4MS44OSA4MS44OSI+PGRlZnM+PHN0eWxlPi5jbHMtMXtmaWxsOm5vbmU7c3Ryb2tlOiM1YTJhODI7c3Ryb2tlLW1pdGVybGltaXQ6MTA7c3Ryb2tlLXdpZHRoOjZweDt9PC9zdHlsZT48L2RlZnM+PHRpdGxlPmljb24tc2VhcmNoLXB1cnBsZTwvdGl0bGU+PGNpcmNsZSBjbGFzcz0iY2xzLTEiIGN4PSIzNS41OSIgY3k9IjM1LjU5IiByPSIzMi41OSIvPjxsaW5lIGNsYXNzPSJjbHMtMSIgeDE9IjU4LjYzIiB5MT0iNTguNjMiIHgyPSI3OS43NyIgeTI9Ijc5Ljc3Ii8+PC9zdmc+);
 }

---

虽然我不知道Safari为什么会这样，但如果您试图在悬停时交叉淡入淡出图标，请使用：after和：before伪选择器。试试这把小提琴：

您的CSS如下所示：

/* Icon container */
.icon {
  position: relative;
  background-color: white;
  width: 100px;
  height: 100px;
}

/* Images containers */
.icon:before, .icon:after {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  content: "";
  display: block;
  background-size: 14px 14px;
  background-repeat: no-repeat;
  transition: opacity 1s;
}

/* Attach backgrounds */
.icon:before {
  background-image: url(data:image/svg+xml;base64,PHN2ZyBpZD0iTGF5ZXJfMSIgZGF0YS1uYW1lPSJMYXllciAxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCA4MS44OSA4MS44OSI+PGRlZnM+PHN0eWxlPi5jbHMtMXtmaWxsOm5vbmU7c3Ryb2tlOiM4YjkyYTE7c3Ryb2tlLW1pdGVybGltaXQ6MTA7c3Ryb2tlLXdpZHRoOjZweDt9PC9zdHlsZT48L2RlZnM+PHRpdGxlPmljb24tc2VhcmNoPC90aXRsZT48Y2lyY2xlIGNsYXNzPSJjbHMtMSIgY3g9IjM1LjU5IiBjeT0iMzUuNTkiIHI9IjMyLjU5Ii8+PGxpbmUgY2xhc3M9ImNscy0xIiB4MT0iNTguNjMiIHkxPSI1OC42MyIgeDI9Ijc5Ljc3IiB5Mj0iNzkuNzciLz48L3N2Zz4=);
  opacity: 1;
}

.icon:after {
  background-image: url(data:image/svg+xml;base64,PHN2ZyBpZD0iTGF5ZXJfMSIgZGF0YS1uYW1lPSJMYXllciAxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCA4MS44OSA4MS44OSI+PGRlZnM+PHN0eWxlPi5jbHMtMXtmaWxsOm5vbmU7c3Ryb2tlOiM1YTJhODI7c3Ryb2tlLW1pdGVybGltaXQ6MTA7c3Ryb2tlLXdpZHRoOjZweDt9PC9zdHlsZT48L2RlZnM+PHRpdGxlPmljb24tc2VhcmNoLXB1cnBsZTwvdGl0bGU+PGNpcmNsZSBjbGFzcz0iY2xzLTEiIGN4PSIzNS41OSIgY3k9IjM1LjU5IiByPSIzMi41OSIvPjxsaW5lIGNsYXNzPSJjbHMtMSIgeDE9IjU4LjYzIiB5MT0iNTguNjMiIHgyPSI3OS43NyIgeTI9Ijc5Ljc3Ii8+PC9zdmc+);
  opacity: 0;
}

/* Transition on hover */
.icon:hover:before {
  opacity: 0;
}

.icon:hover:after {
  opacity: 1;
}

如果出现的图像（悬停之前和悬停期间）大小不相同，则一个图像（在您的情况下，第一个图像）将显示为完全大小，因为您已设置

背景大小：14px 14px和其他图像可能看起来已调整大小（展开或收缩）

所以
1.检查图像的大小。（如果它们不相同，则定义所需的完美css
背景大小
属性
2.要使过渡完美（在所有浏览器和浏览器版本中），请执行以下操作

.icon{
    //other css codes;
    transition: 1s;
    -o-transition: 1s;
    -ms-transition: 1s;
    -moz-transition: 1s;
    -webkit-transition: 1s;
}