* { box-sizing: border-box; }

.background {
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    border-radius: 10px;
    filter: blur(10px);
    -webkit-filter: blur(10px);
    height: 320px; width: 100%;
}

.box-shadow { box-shadow: 0 5px 10px 0 rgba(0, 0, 0, 0.75); }
main { background-image: linear-gradient(rgba(0,0,0,.8), rgba(0,51,64,.85)); }

img.play.loading { -webkit-animation: rotation 1.25s infinite linear; }

input[type=range] { -webkit-appearance: none; -moz-appearance: none; border-radius: 10px; height: 8px; background-image: -webkit-gradient(linear, left top, right top, color-stop(0%, white), color-stop(0%, rgb(146,160,163))); background-image: -moz-linear-gradient(left center, white 0%, white 0%, rgb(146,160,163) 0%, rgb(146,160,163) 100%);}
input[type="range"]::-moz-range-track { border: none; background: none; outline: none; }
input[type=range]:focus { outline: none; border: none; }
input[type=range]::-webkit-slider-thumb { -webkit-appearance: none !important; background-color: white; height: 13px; width: 13px; border-radius: 50%; }
input[type=range]::-moz-range-thumb { -moz-appearance: none !important; background-color: white; border: none; height: 13px; width: 13px; border-radius: 50%; }

@media screen and (max-width: 480px) {
    main { grid-template-columns: 1fr !important; }
}

@-webkit-keyframes rotation {
    from {  -webkit-transform: rotate(0deg); }
    to { -webkit-transform: rotate(359deg); }
}