<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width,initial-scale=1"> <title>Frame 1</title> <script src="js/html-test-utilities.js"></script> <script src="js/popup-tests-frame1.js"></script> <style> body { font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 14px; padding: 0; margin: 0; background-color: #f8f8f8; } a, a:visited { color: #1080c0; text-decoration: underline; } .content { position: absolute; left: 0; top: 0; right: 0; bottom: 0; padding: 0.5em; background-color: #f8f8f8; } </style> </head> <body><div class="content"> <div> ありがとう </div> <div> <a href="#" class="fullscreen-link">Toggle fullscreen</a> </div> </div></body> </html>