Resize Photos within a text

Using Ghost
1

How can you resize pictures within a text? I was able to change the photo above the title with this:

.gh-article-image { max-width: 500px; margin: 0 auto !important; float: none !important; }

But with the pictures within the text, it does not work. Any tips?

2

The only way I know of to resize a picture within a post is to use an HTML block and do it manually.