BootWiki教程网
源代码：
点击运行
<!DOCTYPE html> <html> <body> <p><b>Note:</b> This example only works in Firefox and Google Chrome.</p> <svg version="1.1" xmlns="http://www.w3.org/2000/svg"> <rect height="250" style="fill:blue" width="250" x="20" y="20"> <animate attributeName="opacity" attributeType="CSS" dur="5s" from="1" repeatCount="indefinite" to="0" /> </rect> </svg> </body> </html>
运行结果