| <!DOCTYPE html> | |
| <html> | |
| <style> | |
| html, body { margin: 0; padding: 0; } | |
| </style> | |
| <body> | |
| <canvas id ="canvas" width="240" height="240" style="position:relative; left:-20px; top:-20px"></canvas> | |
| <script> | |
| var canvas = document.getElementById('canvas'); | |
| var context = canvas.getContext("2d"); | |
| context.strokeStyle = 'green'; | |
| context.lineWidth = 8; | |
| context.strokeRect(0, 0, 240, 240); | |
| </script> | |
| </body> | |
| </html> |