Hello, @Allan Morrow,
To add the drop shadow navigate to the Dashboard >> XSTORE >> Theme Options >> Theme Custom CSS >> Global CSS and then paste the below code at the bottom of the CSS box.
.et_b_header-wishlist.et_element-top-level>a{box-shadow:1px 2px 0px 0px silver !important;}
.et_b_header-account.et_element-top-level>a{box-shadow:1px 2px 0px 0px silver !important;}
.content-product .product-content-image{box-shadow:1px 2px 0px 0px silver !important;}
.content-product .product-details .button{box-shadow:1px 2px 0px 0px silver !important;}
Then save settings and check back to your site after clearing the browser cache.
The result will appear like this: https://postimg.cc/bsY4W3Rb
Note: In the above code the word “silver” is the color you can change it with the color you want.
Regards 8Themes Team.