Right To Left

Good question. I haven’t made provision for right-to-left of the letters. At the moment it’s supposed to use a CSS rule that sets display: flex, and for browsers that don’t support flexbox it uses float: left. It appears I got the display:flex wrong and it isn’t being used currently, which I’ll fix in the next update.

To change the defaults you will need to add a new CSS file or use the Custom CSS feature in wp-admin -> appearance -> customize -> additional css.

I think the required CSS to flip the order, which will still work in the next release when I fix flexbox, would be as follows:

.az-letters ul.az-links {
    flex-direction: row-reverse;
}
.az-letters ul.az-links li {
    float: right;
}