I need additonal CSS to center an image and…

My posts won’t allow me to center my images. I posted the following code someone gave me in additonal CSS in the customizer and it’s still not centering the image.

.wp-block-image .aligncenter {
    margin-right: 2.5em;
}
ul, ol {
    margin-top: 40px;
    margin-bottom: 40px;
}

I also want to fix the caption and would like it all on one line.

Can anyone help me out?
Thanks

• This topic was modified 5 years, 9 months ago by Steven Stern (sterndata).

The page I need help with: [log in to see the link]