@keyframes loadingDots{0%,to{content:"Đang xử lý"}25%{content:"Đang xử lý."}50%{content:"Đang xử lý.."}75%{content:"Đang xử lý..."}}.loadingText:after{display:inline-block;content:"Đang xử lý";animation:loadingDots 2s infinite}