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@keyframes fade {
    from { opacity: 1.0; }
    50% { opacity: 0.7; }
    to { opacity: 1.0; }
}
@-webkit-keyframes fade {
    from { opacity: 1.0; }
    50% { opacity: 0.7; }
    to { opacity: 1.0; }
}
.blink { /* only applies to a <div> */
    animation-name: fade;
    animation-duration: 1s;
    animation-timing-function: linear;
    animation-delay: 1s;
    animation-iteration-count: infinite;
    animation-direction: alternate;
    animation-play-state: running;

    /* Safari and Chrome: */
    -webkit-animation-name: fade;
    -webkit-animation-duration: 1s;
    -webkit-animation-timing-function: linear;
    -webkit-animation-delay: 1s;
    -webkit-animation-iteration-count: infinite;
    -webkit-animation-direction: alternate;
    -webkit-animation-play-state: running;
}