Edit in JSFiddle

    // Check cookie 
    if ($.cookie('yourCookieName') != "active") $('#announcement').show(); 
    //Assign cookie on click
    $('#announcement a').on('click',function(){
        $.cookie('yourCookieName', 'active', { expires: 1 }); // cookie will expire in one day
        $('#announcement').fadeOut();
    });

<script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery-cookie/1.4.1/jquery.cookie.min.js"></script>

<div id="announcement" class="announcement">
  Estás haciedo una prueba de código para <a href="#">Skylium</a><br> <button id="cookieAcceptBarConfirm" class="btn btn-success">Haciendo prueba skylium</button>
</div>

* {
  font-family: sans-serif;
}

.announcement {
  display:none;
  position: fixed;
  top: 50%;
  left:0;
  right: 0;
  text-align: center;
  background-color: #333;
  color: #fff;
  padding: 20px 0;
  z-index: 99999;
  -webkit-transform: translateY(-50%);
          transform: translateY(-50%);
}

.announcement a {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
}

button {
  cursor: pointer;
  border: none;
  background-color: #2387c0;
  color: #fff;
  text-transform: uppercase;
  margin-top: 10px;
  height: 40px;
  line-height: 40px;
  padding: 0 20px;
}