@keyframes fade {
 0%, 100% { opacity: 0; }
 16.66%, 83.33% { opacity: 1; }
}
.animate-fade {
 animation: fade 9s infinite;
}
.animate-fade-delay-1 {
 animation-delay: 3s;
}
.animate-fade-delay-2 {
 animation-delay: 6s;
}