.yt-frame {
    background: url('../../img/preloaders/preloader-white.svg');
    background-repeat: no-repeat;
    background-position: center;
    background-size: 10%;
}

.play-button {
    box-sizing: border-box;
    display:inline-block;
    width:80px;
    height:80px;
    padding-top: 14px;
    padding-left: 8px;
    line-height: 20px;
    border: 6px solid #fff;
    border-radius: 50%;
    color:#f5f5f5;
    text-align:center;
    text-decoration:none;
    background-color: rgba(0,0,0,0.5);
    font-size:20px;
    font-weight:bold;
    transition: all 0.3s ease;
}
.play-button:hover {
    background-color: rgba(0,0,0,0.8);
    box-shadow: 0px 0px 10px rgba(255,255,100,1);
    text-shadow: 0px 0px 10px rgba(255,255,100,1);
    color: #fff;
}

.modal-window {
    position: fixed;
    background-color: rgba(0, 0, 0, 0.25);
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 999;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s;
}
.modal-window:target {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
}
.modal-window > div {
    width: 560px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #000;
}
@media (max-width: 768px) {
    .modal-window > div {
        width: 100%;
    }
}
.modal-window header {
    font-weight: bold;
}
.modal-window h1 {
    font-size: 150%;
    margin: 0 0 15px;
}

.modal-close {
    color: #fff;
    line-height: 50px;
    position: absolute;
    right: 0;
    text-align: center;
    top: -50px;
    width: 70px;
    text-decoration: none;
}
.modal-close:hover {
    color: black;
}

ul.two-columns {
    columns: 2;
    -webkit-columns: 2;
    -moz-columns: 2;
}