How can I modify the 'Buy it now' button on my product page?

[Bella_Lenses]

I am required to change the look and code of "Buy it now" button on product page. Kindly let me know the exact liquid and css file for product page. I am using spotlight theme. The store address is 87b913-2(.)myshopify(.)com

Thank you!

[PaulNewton]

Spotlight is a dawn based theme by shopify.

Style add to cart buttons by targeting a CSS selector like the following:

.product-form__submit { color: red; }

To avoid editing theme code directly use custom CSS settings https://help.shopify.com/en/manual/online-store/themes/theme-structure/extend/add-css 

Search https://community.shopify.com/c/forums/searchpage/tab/message?q=Style%20spotlight%20dawn%20theme%20b... 

Good Luck.