.wp-block-accordion-item.is-open>.wp-block-accordion-heading .wp-block-accordion-heading__toggle-icon{ transform:rotate(-45deg); } @media (prefers-reduced-motion:no-preference){ .wp-block-accordion-item{ transition:grid-template-rows .3s ease-out; } .wp-block-accordion-item>.wp-block-accordion-heading .wp-block-accordion-heading__toggle-icon{ transition:transform .2s ease-in-out; } }