.video-slider-block .video-slider-next,
.video-slider-block .video-slider-prev {
    position: absolute;
    display: block;
    z-index: 3;
    top: 50%;
    -webkit-transform: translate(0, -50%);
    -ms-transform: translate(0, -50%);
    transform: translate(0, -50%);
    cursor: pointer;
    font-size: 2.5rem;
    color: #FFFFFF;
    opacity: 1;
    border: none;
    outline: none;
    background: #222222;
    width: 52px;
    height: 52px;
    padding: 5px 0;
    text-align: center;
}

.video-slider-block .video-slider-next {
    right: 0;  
}

.video-slider-block .video-slider-prev {
    left: 0;
}

.video-slider-block .item {
    width: 1110px;
    margin: auto;
    text-align: center;
}

.video-slider-block .item .video-container {
    padding-top: 56.25%;
    position: relative;
    margin-bottom: 20px;
}

.video-slider-block .item .video-container iframe {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    border: 0;
}