The last properties in the CSS fail CSS3 validation:
.anythingSlider .start-stop {
transition-duration: 0;
-o-transition-duration: 0;
-moz-transition-duration: 0;
-webkit-transition-duration: 0;
}
Easy fix to this is to add a a seconds indicator to the duration:
.anythingSlider .start-stop {
transition-duration: 0s;
-o-transition-duration: 0s;
-moz-transition-duration: 0s;
-webkit-transition-duration: 0s;
}