#particles {
  width: 100%;
  height: 100%;
  overflow: hidden;
  position: relative;
}

#pg-inner {
  position: absolute;
  left: 0;
  top: 50%;
  padding: 0 20px;
  width: 100%;
  text-align: center;
}
canvas.pg-canvas {
    height: 700px;
}