mac与windows上的CSS动画

我试图创建一个微调器动画,但我遇到了一些问题与windows和mac显示器之间的差异。

动画是一个非常基本的圆形微调器,由html和css创建

<div class="cow-spinner">
 <span></span>
 <span></span> 
 <span></span>
 <span></span> 
</div>

还有一些基本的css:

.cow-spinner {
  display: inline-block;
  position: relative;
  width: 64px;
  height: 64px;
}
.cow-spinner span {
  box-sizing: border-box;
  display: block;
  position: absolute;
  width: 51px;
  height: 51px;
  margin: 6px;
  border: 3px solid black;
  border-radius: 50%;
  animation: cow-spin 1.2s ease-in-out infinite;
  border-color: black transparent transparent transparent;
}
.cow-spinner span:nth-child(1) {
  animation-delay: -0.45s;
}
.cow-spinner span:nth-child(2) {
  animation-delay: -0.3s;
}
.cow-spinner span:nth-child(3) {
  animation-delay: -0.15s;
}
@keyframes cow-spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

动画本身工作得非常完美,这里有一个工作示例: https://codepen.io/fatoilyguy/pen/oaZMMp