Simple CSS "Live" icon, variation on https://gist.github.com/aschuch/5264707. https://codepen.io/anon/pen/eygvoJ

index.html

<div class="pulse red live"></div>
<h3 class="live">LIVE!</h3>

style.css

.live {
  float: left;
}

.pulse {
    margin-right: 10px;
    margin-top: 1.5em;
    width: 10px;
    height: 10px;
    border-radius: 5px;
}
@-webkit-keyframes redPulse {
    from {
        background-color: #bc330d;
        //-webkit-box-shadow: 0 0 9px #333;
    }
    50% {
        background-color: #e33100;
        -webkit-box-shadow: 0 0 18px #e33100;
    }
    to {
        background-color: #bc330d;
        //-webkit-box-shadow: 0 0 9px #333;
    }
}
div.pulse.red {
    -webkit-animation-name: redPulse;
    -webkit-animation-duration: 2s;
    -webkit-animation-iteration-count: infinite;
}