body, html {
  padding: 0;
  margin: 0;
  width: 100%;
  height: 100%;
  font-family: sans-serif;
  font-size: 12px;
  overflow: hidden;
}
svg {
  width: 100%;
  height: 100%;
  background: white;
}

.line {
  fill-opacity: 0.4;
  stroke-width: 2;
}