@-moz-keyframes blink {0%{opacity:1;} 50%{opacity:0;} 100%{opacity:1;}} /* Firefox */
@-webkit-keyframes blink {0%{opacity:1;} 50%{opacity:0;} 100%{opacity:1;}} /* Webkit */
@-ms-keyframes blink {0%{opacity:1;} 50%{opacity:0;} 100%{opacity:1;}} /* IE */
@keyframes blink {0%{opacity:1;} 50%{opacity:0;} 100%{opacity:1;}} /* Opera and prob css3 final iteration */
.blink {
    -moz-transition:all 1s ease-in-out;
    -webkit-transition:all 1s ease-in-out;
    -o-transition:all 1s ease-in-out;
    -ms-transition:all 1s ease-in-out;
    transition:all 1s ease-in-out;
    /* order: name, direction, duration, iteration-count, timing-function */
    -moz-animation:blink normal 2s infinite ease-in-out; /* Firefox */
    -webkit-animation:blink normal 2s infinite ease-in-out; /* Webkit */
    -ms-animation:blink normal 2s infinite ease-in-out; /* IE */
    animation:blink normal 2s infinite ease-in-out; /* Opera and prob css3 final iteration */
}​