<!--テスト用のこのコード--><html lang="en"><head> <title>Title of the document</title> <style> .header-title a { height: 100px; vertical-align: top; margin-top: -12px; margin-right: 12px; display: inline-block; } @media only screen and (max-width:800px) { .navandlogo { margin: 0 auto; } } </style></head><body> <h1>This is a heading</h1> <p>This is a paragraph.</p> <ul> <li>Coffee</li> <li>Tea</li> <li>Milk</li> </ul> <p>The internal clock in JavaScript starts at midnight January 1, 1970.</p> <p>Click the button to display the number of milliseconds since midnight, January 1, 1970.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { var d = new Date(); var n = d.getTime(); document.getElementById("demo").innerHTML = n; } </script></body></html>