Answers for "cypress have css attribute"

cypress check css property value

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')

cypress element css

cy
  .get('nav')                          // yields <nav>
  .should('be.visible')                // yields <nav>
  .should('have.css', 'font-family')   // yields 'sans-serif'
  .and('match', /serif/)               // yields 'sans-serif'