#symposium #program .timeline>div.session dd::before{background-image:url(/images/en/symposium/session01.webp)}#symposium #program .timeline>div.session.session02 dd::before{background-image:url(/images/en/symposium/session02.webp)}#symposium #program .timeline>div.session.session03 dd::before{background-image:url(/images/en/symposium/session03.webp)}