<div class="modal">
<!--vk subscribe-->
</div>
$(document).ready(function(){
$('.modal').show();
});
$('.carousel').carousel({
interval: 2000
})
<iframe width="560" height="315" src="https://www.youtube.com/embed/xxx" frameborder="0" allowfullscreen></iframe>
.line{
height:50px;
width:100%;
background:#000;
}
.circle{
width:80px;
height:80px;
position:absolute;
left:50%;
margin-left:-40px;
bottom:10px;
background:#000;
}