点击运行
<!Doctype html> <html> <style> #container { width: 400px; height: 400px; position: relative; background: yellow; } #animate { width: 50px; height: 50px; position: absolute; background: red; } </style> <body> <h1>我的第一个 JavaScript 动画</h1> <div id="container"> <div id="animate"></div> </div> </body> </html>
运行结果
