/* Center play triangles by their visual centroid, without cumulative offsets. */
.th-video-link:not(.th-cta-link) .th-play:after,
body:not(.coexist-page) .dm-doc-preview-play:after,
.lab-video-frame .lab-video-play:before,
.about-doc .doc-video-shell.has-poster-play .doc-video-play:before{
left:50%!important;top:50%!important;margin:0!important;transform:translate(-33.333333%,-50%)!important;
}
/* Coexistence uses the before pseudo-element for its preview triangle. */
.coexist-page .dm-doc-preview-play:before{left:50%!important;top:50%!important;margin:0!important;transform:translate(-33.333333%,-50%)!important}

.lab-video-frame .lab-video-play{top:50%!important}