At text size 1.3 a 242px feed thumbnail put the 63px Play 13px into the
hover row (the Play grows with the root font, the picture's height does
not). A picture narrower than 14rem centres the Play and the resume pair
above the row; the picture box is a size container for it.
The Downloads title and channel links were 21px tall inline boxes; they
stand on a 24px line now (B1). The player's description says a failed
load, with a retry, instead of 'No description' (both the side panel
and the popover).
peter
e16cdbd16f