body {
  background-color: white;
  /* leave it to hide the scrollbars */
  overflow: hidden;
  padding: 0;
  margin: 0;
}

#svgoutput {
  position: fixed;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width:100%;
  height: 100%;
}