.parpadea {
          animation-name: parpadeo;
          animation-duration: 1000s;
          animation-timing-function: linear;
          animation-iteration-count: infinite;
          -webkit-animation-name:parpadeo;
          -webkit-animation-duration: 1s;
          -webkit-animation-timing-function: linear;
          -webkit-animation-iteration-count: infinite;
        }
        @-moz-keyframes parpadeo {  
          0% { opacity: 1.0; }
          50% { opacity: 0.0; }
          100% { opacity: 1.0; }
        }
        @-webkit-keyframes parpadeo {  
          0% { opacity: 1.0; }
          50% { opacity: 0.0; }
          100% { opacity: 1.0; }
        }

        @keyframes parpadeo {  
          0% { opacity: 1.0; }
          50% { opacity: 0.0; }
          100% { opacity: 1.0; }
        }