.videoblock{
    position: relative;
}
.videoblock a{
    position: relative;
}
.videoblock a:before{
    position: absolute;
    left: 50%;
    top: 50%;
    width: 54px;
    height: 54px;
    background: transparent url(images/pay.png) no-repeat;
    content: '';
    transform: translate(-50%,-50%);
    display: block;
}

.fancybox-slide--iframe .fancybox-content {
    width  : 800px;
    height : 600px;
    max-width  : 80%;
    max-height : 80%;
    margin: 0;
}