void setup() 
{
  size(400, 400);
  strokeWeight(10);
  smooth();
  background(0);
  
}

void draw() 
{
    float r = random(0, height);
    float x = random(0, width);
    stroke(r, 100);
    line(random(r), random(width), random(x*2), random(height));
  

}