body {
    background-color: #232323;
}

h1{
    margin-top: 60px;
    font-size: 20px;
    font-weight: bold;
    color: #fff;
    text-align: center;
    align-content: center;
}
.slider {
    align-content: center;
    width: 95%;
    margin:auto;
    margin-top: 10px;
    overflow: hidden;
}

.slider ul {
    display: flex;
    padding: 0;
    width: 400%;
    
    animation: cambio 35s infinite alternate;
    animation-timing-function: linear;
}

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

.slider img{
    width: 100%;
    
}

@keyframes cambio {
    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%; }
}

h2 {
    margin-top: 10px;
    font-size: 15px;
    font-weight: bold;
    color: #fff;
    text-align: center;
    align-content: center;
    margin-bottom: 10px;
}