.slide-1 { background-image: url(../images/slide-1.png); }
.slide-2 { background-image: url(../images/slide-2.png); }
.slide-3 { background-image: url(../images/slide-3.png); }
.slide-4 { background-image: url(../images/slide-4.png); }
.slide-5 { background-image: url(../images/slide-5.png); }