particlesJS("particles-js", {
      particles: {
        number: { value: 80, density: { enable: true, value_area: 800 } },
        color: { value: "#8080ff" },
        shape: { type: "circle" },
        opacity: { value: 0.7 },
        size: { value: 5 },
        line_linked: {
          enable: true,
          distance: 150,
          color: "#8080ff",
          opacity: 0.2,
          width: 2
        },
        move: { enable: true, speed: 2 }
      },
      interactivity: {
        detect_on: "canvas",
        events: {
          onhover: { enable: true, mode: "repulse" },
          onclick: { enable: true, mode: "push" }
        },
        modes: {
          repulse: { distance: 100 },
          push: { particles_nb: 4 }
        }
      },
      retina_detect: true
    });