Thanks for all the answers. It's so cool of you to help me out!
But on the 1st question......
There is a container with a class of '.hidden'
Inside that is a container with a class of '.pic1'
Inside that is a container with a class of '.reveal' with an id of #img1
The only one of these that has any CSS is the 3rd one ('.reveal'). BUT.... if you change the opacity for that div and in that class, it changes the opacity for the actual picture itself.
I'm looking to change the opacity of the rest of the screen - the part that partially hides your web page while looking at the modal window pic.
If you will open your flower gallery, click on one to get the modal window up, and then right-click to get the Chrome Inspect tool you will see that there is an entire DIV that we can't see in SD3 and it has a class of '.reveal-overlay'
And then over in the right-side styles pane of the Inspect tool you can see:
.reveal-overlay {
position: fixed;
top: 0;
right: 0;
bottom: 0;
left: 0;
z-index: 1005;
display: none;
background-color: rgba(10, 10, 10, 0.45);
overflow-y: auto;
And if you adjust that 0.45 (opacity) at the end of the background-color you will see what I'm trying to be able to set IN SD3.
Apparently SD3 and it's attributes (or something) sets this up for us when we do a modal window. But it's not anywhere I can see it and adjust it.
I know I can do it after export by opening it in notepad before I transfer the files to my host. But I'm trying to figure out how to get to it in the SD3 program. You have brought me SO far toward being able to do it all inside the program and I hope I can get to this last little thing.
Knowing is half the battle