button#play-button {
    position: fixed;
    left: 5%;
    top: 5%;

    font-size: 2em;

    background-color: white;
    width: 50px;
    height: 50px;
    text-align: center;
    box-shadow: 0px 0px 5px hsla(0, 0%, 0%, .5);

    padding-left: 1px;

    border: none;
    border-radius: 50%;

    z-index: 999;
    cursor: pointer;
    opacity: 0.75;

    &:hover {
        transform: scale(1.105);
    opacity: 1;
    }
}