body, html {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background: #000;
}

canvas{
    position:absolute;
    top: 0;
    left: 0;
    background: #000;
    cursor: crosshair;
}
#stats{
    color:white;
    background-color:rgba(255, 255, 255, 0.3);
    font-size:20px;
    padding:10px;
    position:absolute;
    top: 0;
    left: 0;
}
#rules{
    opacity:1;
    color:white;
    background-color:rgba(0, 0, 0, .7);
    font-size:20px;
    position:absolute;
    text-align:center;
    top:40vh;
    width:96vw;
    left:0;
    padding:2vw;
    overflow: hidden;
    max-height: 100vh;
    max-width: 100vw;
}
#rules.close {
    max-height: 0;
    max-width: 0;
    opacity: 0;

    transition: max-height 2s,opacity 2s, max-width .2s 2s;
}