diff --git a/docs/art/brownian_motion/main.js b/docs/art/brownian_motion/main.js
index 63580c6..6d884f9 100644
--- a/docs/art/brownian_motion/main.js
+++ b/docs/art/brownian_motion/main.js
@@ -3,34 +3,25 @@
 // Date: 22.09.2022
 
 // Global variables
-const width = 600;
-const height = 600;
-
-const xmid = width / 2;
-const ymid = height / 2;
-
-const n_particles = 100;
-
 let p = [];
 
 function setup() {
-  let canvas = createCanvas(width, height);
+  let canvas = createCanvas(windowWidth, windowHeight);
   canvas.parent("canvas");
-
+  let n_particles = int(windowHeight * windowHeight * 0.001);
   for (let i = 0; i < n_particles; i++) {
-    let x = random(width);
-    let y = random(height);
-    let dx = random(-5, 5);
-    let dy = random(-5, 5);
+    let x = random(windowWidth);
+    let y = random(windowHeight);
+    let dx = random(-10, 10);
+    let dy = random(-10, 10);
     let size = random(1, 5);
     p.push(new Point(x, y, dx, dy, size));
   }
-
 }
 
 function draw() {
   clear();
-  for (let i=0; i < n_particles; i++) {
+  for (let i=0; i < p.length; i++) {
     p[i].move();
     p[i].draw();
   }
diff --git a/docs/art/fibonacci_sphere/main.js b/docs/art/fibonacci_sphere/main.js
index fcac034..f8f031d 100644
--- a/docs/art/fibonacci_sphere/main.js
+++ b/docs/art/fibonacci_sphere/main.js
@@ -3,11 +3,7 @@
 // Based on Game of Life by Joan Soler-Adillon.
 
 // Global variables
-const width = 600;
-const height = width;
-
-const xmid = width / 2;
-const ymid = height / 2;
+let width, height, xmid, ymid, multiplier;
 
 const size = 3;
 const PI = Math.PI;
@@ -15,10 +11,15 @@ const GA = (3 - Math.sqrt(5)) * PI;
 
 let N = 100;
 let factor = 1;
-let multiplier = width / 2 - 10;
 
 function setup() {
-  let canvas = createCanvas(width, height);
+  width = Math.min(windowWidth, windowHeight);
+  height = width;
+  xmid = windowWidth/2;
+  ymid = windowHeight/2;
+  multiplier = width / 2 - 10;
+
+  let canvas = createCanvas(windowWidth, windowHeight);
   canvas.parent("canvas");
 }