particlesJS('particles', {
    particles: {
      color: '#2c3e50',
      shape: 'circle',
      opacity: 1,
      size: 4.5,
      nb: 200,
      line_linked: {
        enable_auto: true,
        distance: 50,
        color: '#2c3e50',
        opacity: 1,
        width: 1,
        condensed_mode: {
          enable: true,
          rotateX: 600,
          rotateY: 600
        }
      },
      anim: {
        enable: true,
        speed: 3.5
      }
    },
    interactivity: {
      enable: true,
      mouse: {
        distance: 250
      },
      detect_on: 'canvas',
      mode: 'grab',
      line_linked: {
        opacity: 0.8
      },  
    },
    retina_detect: true
});