Hello,
1) Replace
.single-product .single-product-builder .single_add_to_cart_button.button {
max-width: 172px;
}
with
.single-product .single-product-builder .single_add_to_cart_button.button {
margin-right: 15px;
max-width: 172px;
}
Go to YITH > Wishlist > Wishlist page settings and choose the icons for the button
2) You can use the table HTML in the single product custom tab while create your product. Or you can create product attributes https://prnt.sc/133wu9x and then it will be displayed under the Additional Information tab like a table.
3) Edit tabs element https://prnt.sc/133wwcz and choose the alignment of the tabs title in the element settings without custom CSS.
Regards