@keyframes slidy {
    0% {
        left: 0%;
    }

    20% {
        left: 0%;
    }

    25% {
        left: -100%;
    }

    45% {
        left: -100%;
    }

    50% {
        left: -200%;
    }

    70% {
        left: -200%;
    }

    75% {
        left: -300%;
    }

    95% {
        left: -300%;
    }

    100% {
        left: -400%;
    }
}

body {
    margin: 0;
}

div#slider {
    overflow: hidden;
}

    div#slider figure img {
        width: 20%;
        float: left;
    }

    div#slider figure {
        position: relative;
        width: 500%;
        margin: 0;
        left: 0;
        text-align: left;
        font-size: 0;
        animation: 30s slidy infinite;
    }