Hi @jpb10
1.) We managed to reproduce this problem with the latest Firefox, so we created a fix for this problem which will be available in the next release of Smart Slider 3.
However if you would like to give it a try right now, then please open a support ticket at: https://smartslider3.com/contact-us/support/?ref=https://www.ads-software.com/support/topic/button-not-working-with-keyboard-in-firefox/
and we will send you the installer of our latest build.
2.) If you check the elements e.g. buttons of some themes ( e.g.: Twenty Sixteen, Twenty Seventeen, Twenty Twenty ) you will notice that they are using the hovered style for the focus state as well. ( E.g.: search button )
If you don’t want this to happen, then you could go to Smart Slider 3 > Global Settings > Framework settings > Improved Frontend Accessibility – https://smartslider.helpscoutdocs.com/article/1785-framework
however please note that, if you disable this setting nothing will indicate the currently active link in the slider.
Note: We can not provide support for custom coding, so if you would like to set a different style for the focus state then you should inspect the HTML structure of the elements and write a stronger CSS for the focus state – https://www.w3schools.com/cssref/sel_focus.asp – to override ours.
You will be able to enter your custom CSS at Slider Settings > Developer tab > CSS: https://smartslider.helpscoutdocs.com/article/1806-slider-settings-developer
Best regards,
Laszlo.