问幻灯片动画错误

EN

/* Slider */
.slider {
  display: block;
  height: 100%;
  width: 100%;
  z-index: -1;
  background-color: #1f1f1f;
  overflow: hidden;
  position: absolute;
  top: 0px;
  right: 0px;
  border-bottom: 10px solid rgb(121, 0, 0);
}

.slider > * {
  position: absolute;
  display: block;
  width: 100%;
  height: 100%;
  background-color: #1f1f1f;
  animation: slide 12s infinite;
  overflow: hidden;
}

.slide:nth-child(1) {
  left: 0%;
  animation-delay: -1s;
  background-image: url(img/slide1.jpg);
  background-size: cover;
  background-position: center;
}

.slide:nth-child(2) {
  left: 100%;
  animation-delay: 2s;
  background-image: url(img/slide2.png);
  background-size: cover;
  background-position: center;
}

.slide:nth-child(3) {
  left: 100%;
  animation-delay: 5s;
  background-image: url(img/slide3.jpg);
  background-size: cover;
  background-position: center;
}


.slide p {
  font-size: 2rem;
  text-align: center;
  display: inline-block;
  width: 100%;
  margin-top: 340px;
  color: #fff;
}

@keyframes slide {
  0% { left: 100%; width: 100%; opacity: 1;}
  5% { left: 0%;}
  25% { left: 0%;}
  30% { left: -100%; width: 100%; opacity: 1;} 
  30.0001% { left: -100%; width: 0%; opacity: 0;}
  100% { left: 100%; width: 0%; opacity: 0;}
}

<div class="slider">
      <div class="slide">
        <p>Slide1</p>
      </div>
      <div class="slide">
        <p>Slide2</p>
      </div>
      <div class="slide">
        <p>Slide3</p>
      </div>
    </div>