| <!DOCTYPE html> |
| <iframe frameborder="0"></iframe> |
| <div id = "content"> |
| <div style="width: 400px; height: 400px"></div> |
| </div> |
| <script> |
| var idoc = document.querySelector("iframe").contentDocument; |
| var sheet = idoc.head.appendChild(idoc.createElement("style")).sheet; |
| idoc.body.innerHTML = document.querySelector('#content').innerHTML; |
| document.body.offsetTop; |
| sheet.insertRule("::-webkit-scrollbar { width: 50px; height: 20px; }", 0); |
| sheet.insertRule("::-webkit-scrollbar-thumb { background: green; }", 1); |
| </script> |
