Markdown内嵌网页

iframe常用属性：https://m.php.cn/article/418104.html

markdown内嵌网页测试

<div style="position: relative; padding: 30% 45%;">
<iframe style="position: absolute; width: 100%; height: 100%; left: 0; top: 0;" src="https://docs.python.org/zh-cn/3/tutorial/index.html" frameborder="1" scrolling="yes" width="320" height="240"</iframe>
</div>