* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.slider-superior {
  width: 100%;
  max-width: 1600px;
  height: auto;
  margin: 0 auto;
  overflow: hidden;
}
.slider-superior ul {
  display: flex;
  padding: 0;
  width: 400%;

  animation: slide 20s infinite alternate ease-in-out;
}

.slider-superior li {
  width: 100%;
  list-style: none;
}

.slider-superior img {
  width: 100%;
}

@keyframes slide {
  0% {
    margin-left: 0;
  }
  20% {
    margin-left: 0;
  }

  25% {
    margin-left: -100%;
  }
  45% {
    margin-left: -100%;
  }

  50% {
    margin-left: -200%;
  }
  70% {
    margin-left: -200%;
  }

  75% {
    margin-left: -300%;
  }
  100% {
    margin-left: -300%;
  }
}