.barra{position:relative;width:100%;height:8px;background-color:#e0e0e0;overflow:hidden;margin:8px 0}.barra:before{content:"";position:absolute;left:-80%;width:80%;height:100%;background:linear-gradient(90deg,transparent,#50aa6c,transparent);animation:correr 2s linear infinite}@keyframes correr{0%{left:-80%}to{left:100%}}