canvas {
    position: absolute;
    width: 100%;
    height: 100%;
  }

.tags {
    position: absolute;
    margin: 15px;
    top:0px;
    right: 0px;
}

.pages{
    position: absolute;
    margin: 15px;
    top: 0px;
}

@media only screen and (max-width:1000px) {
    button{font-size: 1.5em; }
  }