I am getting an error Invalid CSS property declaration at:;
See top: 50%;; in the code below. Can you tell me please where I go to fix it.

<script>(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = “//connect.facebook.net/en_GB/sdk.js#xfbml=1&version=v2.8&appId=1548213832159053″;
fjs.parentNode.insertBefore(js, fjs);
}(document, ‘script’, ‘facebook-jssdk’));</script><style type=”text/css”>@media (max-width: 292px) { .aspexifblikebox { display: none; } }.aspexifblikebox {
overflow: hidden;
z-index: 99999;
position: fixed;
padding: 0 0 0 35px;
top: 50%;;
margin-top: -142px;
right:-245px;
}

.aspexifblikebox .aspexi_facebook_iframe {
padding: 0;
border: 2px solid #3399cc;
background: #fff;
width: 245px;
height: 285px;
box-sizing: border-box;
overflow: hidden;
}