svg.trail {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  pointer-events: none;
}

svg.trail path {
  fill: none;
  stroke: url(#trail-gradient);
  stroke-width: 5px;
  stroke-linecap: round;
  stroke-linejoin: round;
}