diff --git a/assets/files/canvas.html b/assets/files/canvas.html
index 6962571..8cc415c 100644
--- a/assets/files/canvas.html
+++ b/assets/files/canvas.html
@@ -10,11 +10,11 @@
 
 
     <div><b>Straight Line</b></div>
-    <canvas id="line" width="300" height="0" style="border: 1px solid #333;"></canvas><br/><br/>
+    <canvas id="line" width="300" height="0" style="border: 2px solid #333;"></canvas><br/><br/>
 
 
     <div><b>Rectangle</b></div>
-    <canvas id="rectangle" width="300" height="200" style="border: 1px solid #999;"></canvas><br/><br/>
+    <canvas id="rectangle" width="300" height="200" style="border: 2px solid #999;"></canvas><br/><br/>
 
 
     <div><b>Rectangle with Style</b></div>