.grisbg {
	width: 100%;
	background: rgb(229, 231, 234);
}
.slider {
	width: 100%;
	margin: auto;
	overflow: hidden;
	background: rgb(229, 231, 234);
	padding-bottom: 0;
}

.slider ul {
	display: flex;
	padding: 0;
	margin-bottom: 0;
	width: 400%;
	
	animation: cambio 20s infinite alternate 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%;}
	75% {margin-left: -200%;}
	
	80% {margin-left: -300%;}
	100% {margin-left: -300%;}
}


/* MEDIA QUERYS */

@media screen and (min-width: 768px) {
    .slider li {
        width: 85%;
		list-style: none;
    }

}
@media (min-width: 1685px) {

	.slider {
        width: 1600px;
        margin: auto;
		overflow: hidden;
    }

}