动画linkBorderHover不能与元素之前的::after /：：一起使用？

.element {
  position: relative;
  z-index: 1;
  animation: linkBorderHover 1s ease-in-out;
}

.element::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  background-color: rgba(0, 0, 0, 0.5);
}

.element {
  position: relative;
  animation: linkBorderHover 1s ease-in-out;
}

.element::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  transform: translateZ(0);
}

.element {
  position: relative;
}

.element::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
}

@keyframes linkBorderHover {
  0% {
    border: 1px solid #000;
  }
  100% {
    border: 2px solid #f00;
  }
}

.element:hover {
  animation: linkBorderHover 1s ease-in-out;
}