Starfield

Twinkling stars on a dark background.

.stars { background:#0a0a0b; background-image:radial-gradient(1px 1px at 20% 30%,white 50%,transparent),radial-gradient(1px 1px at 60% 70%,white 50%,transparent),radial-gradient(1px 1px at 80% 20%,rgba(255,255,255,0.6) 50%,transparent); animation:tw 3s ease-in-out infinite alternate; }
@keyframes tw { from{opacity:0.7} to{opacity:1} }