.slider-box{
  width: 1200px;
  height: auto;
  margin: 10px auto 0;
  border-radius: 25px;
  overflow: hidden;
}

.slider-box ul{
  display: flex;
  margin-bottom: -20px;
  width: 400%;
  animation: slide 20s infinite alternate ease-in-out;
}

.slider-box li{
  width: 100%;
  list-style: none;
  position: relative;
}

.texto{
  position: absolute;
  text-align: center;
  padding: 0 250px;
  top: 250px;
  color: #fff;
}

.texto h2{
  font-size: 45px;
  margin-bottom: 35px;
}

.slider-box 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%;}
}

@media(max-width:991px){
  
  .slider-box{
    width: 100%;
    margin-top: 1px;
    border-radius: 0;
  }

  .texto{
    top: 50px;
    padding: 0;
  }

  .texto h2{
    font-size: 15px;
  }

  .texto p{
    font-size: 15px;
  }
}