svg-css/3-dots-scale.svg

<svg width="24" height="24" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><style>.spinner_b2T7{animation:spinner_xe7Q .8s linear infinite}.spinner_YRVV{animation-delay:-.65s}.spinner_c9oY{animation-delay:-.5s}@keyframes spinner_xe7Q{93.75%,100%{r:3px}46.875%{r:.2px}}</style><circle class="spinner_b2T7" cx="4" cy="12" r="3"/><circle class="spinner_b2T7 spinner_YRVV" cx="12" cy="12" r="3"/><circle class="spinner_b2T7 spinner_c9oY" cx="20" cy="12" r="3"/></svg>