The border-radius is the distance from the middle of the button to the bounding surface of a button. The border-radius is adjustable.
How to Change the Border-Radius
STEP 1
In Shopify Admin, click Online Store.
STEP 2
Select your Debutify theme and click Customize.
STEP 3
Click on the Theme Settings icon.
STEP 4
Click on Advanced Settings.
STEP 5
Move the slider to your desired border-radius.
STEP 6
Click Save to apply the changes.