Hi there,
Thanks for writing in! You can add this under Custom > CSS in the Customizer or in your child theme’s style.css file.
a.x-btn.x-btn-square.x-btn-large.x-btn-block {
text-transform: none;
}
You can target specific buttons using selectors. Then just use the text transform rule to change between none and uppercase.
If you need assistance with the selectors, let us know the specific buttons and what you would like to achieve and we’ll do our best to assist you.
Hope this helps – thanks!