Cypress memeriksa nilai properti CSS
cy.get('[data-test-id="test-example"]')
.invoke('attr', 'data-test-id')
.should('equal', 'test-example')
// or you can get an element's CSS property
cy.get('[data-test-id="test-example"]')
.invoke('css', 'position')
.should('equal', 'static')
Enchanting Echidna