body{
    margin: 0;
    padding: 0;
}
.slider{
    width: 10%;
    overflow: hidden;
    margin:auto;
    
}
.slider ul{
    display: flex;
    padding: 0px;
 width: 150%;
    animation: cambio 20s infinite;
  

}
.slider li{
    width: 100%;
    list-style: none;
}
.slider img{
    
}
@keyframes cambio{
    0% { margin-left: 0%}
    20% {margin-left: 0;}
    25% { margin-left: -100%}
    45% {margin-left: -100;}
}