Image dont responsive

assalamu’alaikum, i am indonesian, sorry if my language is bad 🙂
a have blog http://www.cronyos.com dan i have any post, example : https://www.cronyos.com/6-teknologi-modern-yang-terdapat-pada-mobil-era-tahun-2017/amp/ and other.
i want to ask, why image in my post not responsive? even though ini non-amp version post the image can show properly in mobile view. thank you 🙂