ChatGPT 生成微信小程序代码

write wechat mini program code using wxml, wxss and wjs,  separate every part into single section, no inline style. the page named ‘post’. write a page with one title(My First Blog), one blog post(with short sample text), one image(full width, with random cat placeholder) ,  and one button, red background, white text, full width, with text ‘CLICK ME’. the page has 20rpx padding, and a `#f0f0f0` background.  title font is 40rpx, the post font is 26rpx, color is `#333`. there are 20rpx margin between text and image, when click the button, popup alert with text ‘oh you clicked me~’.