@keyframes blue{0%{opacity:0}15%{opacity:1}90%{opacity:1}to{opacity:0}}@keyframes emerald{0%{opacity:0}20%{opacity:0}35%{opacity:1}90%{opacity:1}to{opacity:0}}@keyframes green{0%{opacity:0}40%{opacity:0}55%{opacity:1}90%{opacity:1}to{opacity:0}}@keyframes gray{0%{opacity:0}60%{opacity:0}75%{opacity:1}90%{opacity:1}to{opacity:0}}.blue{animation:blue 1s linear infinite}.emerald{animation:emerald 1s linear infinite}.green{animation:green 1s linear infinite}.gray{animation:gray 1s linear infinite}