@keyframes slideShow {
    10% { background-image: url('../images/abou-logo.png'); }
    30% { background-image: url('../images/slide-2.png'); }
    60% { background-image: url('../images/slide-3.png'); }
    90% { background-image: url('../images/slide-5.png'); }
    100% { background-image: url('../images/abou-logo.png'); } /* Loop back to the start */
}