body {
    background-color: black;
    color: white;
}

body div {
    text-align: center;
    background-color: black;
    color: white;
}

body div #daemun {
    background-color:black;
    margin: 18rem auto 0 0;
}

body div #daemun video{
    width: 80%;
}

body div a {
    float: right;
    margin: 0.5rem 10rem 0 0;
}

body div a img:last-child {display:none}
body div a:hover img:first-child{display:none}
body div a:hover img:last-child{display:inline-block}

#video::-webkit-media-controls-play-button {
    display: none;
  }