| <!doctype html> | |
| <head> | |
| <link rel="stylesheet" href="/slow-response"> | |
| <script> | |
| const params = new URLSearchParams(window.location.search); | |
| if (params.has('red')) { | |
| document.documentElement.style.background = "red"; | |
| } else { | |
| document.documentElement.style.background = "blue"; | |
| } | |
| </script> | |
| <style> | |
| html { | |
| margin: 0; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| </body> |