.btn { position: relative; padding: 1.5rem 4.5rem; } .btn .dot { position: absolute; width: 4px; height: 4px; @for $i from 1 through $count { &:nth-child(#{$i}) { top: 50%; left: 50%; transform: translate3d(-50%, -50%, 0) rotate(#{360 / $count * $i}deg); } } &::before { content: ""; position: absolute; top: 0; left: 0; width: 4px; height: 4px; border-radius: 50%; offset-path: path("M0 1c7.1 0 10.7 2 14.3 4s7.1 4 14.3 4 10.7-2 14.3-4 7.2-4 14.3-4 10.7 2 14.3 4 7.1 4 14.3 4 10.7-2 14.3-4 7.1-4 14.3-4 10.7 2 14.3 4 7.1 4 14.3 4 10.7-2 14.3-4 7.1-4 14.3-4 10.7 2 14.3 4 7.1 4 14.3 4"); offset-distance: 0; } } .btn.is-animating:active .dot:nth-child(4n+1)::before { animation: dot var(--animation-time) var(--animation-timging-function); } .btn.is-animating:active .dot:nth-child(4n+2)::before { border: 1px solid var(--color-primary); background: transparent; animation: dot var(--animation-time) var(--animation-timging-function) 0.1s; } .btn.is-animating:active .dot:nth-child(4n+3)::before { animation: dot var(--animation-time) var(--animation-timging-function) 0.2s; } .btn.is-animating:active .dot:nth-child(4n)::before { border: 1px solid var(--color-primary); background: transparent; animation: dot var(--animation-time) var(--animation-timging-function) 0.3s; } @keyframes dot { 0% { offset-distance: 0%; opacity: 1; } 90% { offset-distance: 60%; opacity: .5; } 100% { offset-distance: 100%; opacity: 0; } }