polyfill-next-selector { content: ':host.slide-down > * [slide-down]'; } :host(.slide-down) ::content > * /deep/ [slide-down] { -webkit-transition: -webkit-transform {{g.transitions.slideDuration || g.transitions.duration}} cubic-bezier(0.4, 0, 0.2, 1); transition: transform {{g.transitions.slideDuration || g.transitions.duration}} cubic-bezier(0.4, 0, 0.2, 1); } polyfill-next-selector { content: ':host > .core-selected [slide-down]'; } ::content > .core-selected /deep/ [slide-down] { -webkit-transform: none; transform: none; } polyfill-next-selector { content: ':host > [animate]:not(.core-selected) [slide-down]'; } ::content > [animate]:not(.core-selected) /deep/ [slide-down] { -webkit-transform: translateY(-100%); transform: translateY(-100%); }