I want to use an image above and below my title. I went to the format menu and edited the heading suffix and prefix with the image tag. I used h=10; ebook =30% to test out the sizes and scaling. The images are in the binder.
When I compiled, the images were included in the epub but they took up the full width when I opened the book on my phone and on a desktop. It’s very large. Changing the size or percentage in the settings has no effect on how it compiles. Adding a width value didn’t help. Zero effect.
Can you check the CSS in the Compile Format Designer for a statement that overrules the image width setting? A statement matching all images will overrule the generated CSS for these images from Scrivener.
There is a bug in 3.1.5.1 whereby the ebook percentage in the image placeholder is not applying unless there’s also a fixed layout width included (though the value of that doesn’t matter). So for your ebook layout, you could just change the height value to a width value: <$img:ImageName;w=10;ebook=30%>.