CSS悬停不起作用(由于伪元素)?[副本]

.grain {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: auto;
  background-position: center
}

.grain:after {
  content: "";
  background-image: url("https://upload.wikimedia.org/wikipedia/commons/7/76/1k_Dissolve_Noise_Texture.png");
  height: 300%;
  width: 300%;
  position: fixed;
  opacity: 0.1;
  animation: animateGrain 8s steps(10) infinite;
}

@keyframes animateGrain {
  0%,
  100% {
    transform: translate(0, 0)
  }
  10% {
    transform: translate(-5%, -10%)
  }
  20% {
    transform: translate(-15%, -20%)
  }
  30% {
    transform: translate(-5%, -10%)
  }
  40% {
    transform: translate(-15%, -20%)
  }
  50% {
    transform: translate(-5%, -10%)
  }
  60% {
    transform: translate(-15%, -20%)
  }
  70% {
    transform: translate(-5%, -10%)
  }
  80% {
    transform: translate(-15%, -20%)
  }
  90% {
    transform: translate(-5%, -10%)
  }
  100% {
    transform: translate(-15%, -20%)
  }
}

.tiltshift:after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  backdrop-filter: blur(26px);
  animation: clip-fade 12s infinite alternate;
}

.tiltshift {
  border: 1px solid red;
}

@keyframes clip-fade {
  0% {
    mask-image: linear-gradient(204deg, rgba(0, 0, 0, 1), transparent 100%);
  }
  100% {
    mask-image: linear-gradient(0deg, rgba(0, 0, 0, 1), transparent 100%);
  }
}

#rect1 {
  fill: red !important;
}

#rect1:hover {
  transform: scale(1.07) !important;
}

<div class="tiltshift">
  <div class="grain">
    <svg>...</svg>
  </div>
</div>