@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%; }
}

#slider { 
    width: 500px; 
    max-width: 80%;
    
    margin-left: 10%;
    margin-right: 10%;
    
    overflow: hidden; 
}

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

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

/*Responsiver Style*/
@media screen and (max-width : 600px) {
    #slider figure { 
    position: relative;
    width: 500%;
    margin: 0;
    left: 0;
    text-align: left;
    font-size: 0;
    animation: 30s slidy infinite; 
}
    
    @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%; }
}
    
}