How can I customize button shapes in the Dawn theme?

Store Design
5

Absolutely, no problem!
https://shaes-test-store-2.myshopify.com/

Password: stughu

Trying to get something like what’s in the header banner of this store: https://store.fearlessrecords.com/?_ga=2.43265318.2085165501.1654897444-1809281342.1654897444