Image sizing in a blog post

Does anyone know how to size images in a blog post properly so that the image does not get cut off in mobile view?

I am specifically talking about images within a blog post and not the Post Image. 

The text seems to wrap in our blog posts in mobile view properly but images are cut off.

See example in mobile: https://community.arm.com/arm-community-blogs/b/graphics-gaming-and-vr-blog/posts/introducing-arm-accuracy-super-resolution 

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