.pulse-circles circle{transform-origin:center;animation:pulse 4s ease-in-out infinite}.pulse-circles circle:nth-child(2){animation-delay:0.6s}.pulse-circles circle:nth-child(3){animation-delay:1.2s}@keyframes pulse{0%,100%{transform:scale(1);opacity:0.5}50%{transform:scale(1.04);opacity:1}}