body {
    overflow: hidden;
}

html, body {
    height: 100%;
}

html, body, div, canvas {
    margin: 0;
    padding: 0;
}

#main {
    flex: 1 1 auto;
    background-color: black;
    width: 100%;
    display: block;
    height: 100%;
}

#bar {
    background-color: #222;
}

#container {
    height: 100%;
    display: flex;
    flex-direction: column;
}

button {
    -webkit-touch-callout: none; /* iOS Safari */
      -webkit-user-select: none; /* Safari */
       -khtml-user-select: none; /* Konqueror HTML */
         -moz-user-select: none; /* Old versions of Firefox */
          -ms-user-select: none; /* Internet Explorer/Edge */
              user-select: none; /* Non-prefixed version, currently
                                    supported by Chrome, Edge, Opera and Firefox */
    -webkit-tap-highlight-color:  rgba(255, 255, 255, 0); 
    cursor: pointer;
}