使用CSS按比例調整圖像大小？ [重複] - Resize image proportionally with CSS? [duplicate]

問題：

This question already has an answer here: 這個問題在這裏已有答案：

• How do I auto-resize an image to fit a 'div' container? 如何自動調整圖像大小以適合「div」容器？ 31 answers 31個答案

Is there a way to resize (scale down) images proportionally using ONLY CSS? 有沒有辦法使用ONLY CSS按比例調整大小（縮小）圖像？

I'm doing the JavaScript way, but just trying to see if this is possible with CSS. 我正在作JavaScript方式，但只是想看看CSS是否可行。

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解決方案：

參考一： https://stackoom.com/question/3Ix5/使用CSS按比例調整圖像大小-重複
參考二： https://oldbug.net/q/3Ix5/Resize-image-proportionally-with-CSS-duplicate