.spin-animation path{animation:custom 2s linear infinite}@keyframes custom{0%{opacity:0}25%{opacity:.1}50%{opacity:.2}75%{opacity:.5}to{opacity:1}}.spin-animation path:first-child{animation-delay:0s}.spin-animation path:nth-child(2){animation-delay:.5s}.spin-animation path:nth-child(3){animation-delay:1s}.spin-animation path:nth-child(4){animation-delay:2s}