There are multiple options to style product WooCommerce pages.
All options are available in Customizer – WooCommerce – Product Page
Options are divided into sections and you can define styling of each product element on product page.
Global options
Enable/Disable gallery zoom/lightbox or slider
Enable/Disable related product
Enable or disable the breadcrumbs and define the typography
Product styling
Title – define typography, spacing or border
Price – define typography, spacing or border
Summary – define typography, spacing or border
Button and Quantity – define typography, spacing or border. Style plus/minus buttons
Image – you can define image area height, border or spacing
Tabs – set typography, colors, align etc…
Meta – enable/disable meta information (tags, categories, SKU) and define border or spacing
Sale – set the sale badge position, border, colors and typography