.uk-overlay-panel {  
    text-shadow: 3px 3px 5px #000;       
}  
.uk-navbar-nav li a {  
    text-shadow: 2px 2px 2px #000;   
}

.video-responsive{
    overflow:hidden;
    padding-bottom:56.25%;
    position:relative;
    height:0;
}
.video-responsive iframe{
    left:0;
    top:0;
    height:100%;
    width:100%;
    position:absolute;
}