add css transition to player controls
add css transition to player controls

yciabaud/webtorrent-desktop,feross/webtorrent-app,yciabaud/webtorrent-desktop,michaelgeorgeattard/webtorrent-desktop,webtorrent/webtorrent-desktop,michaelgeorgeattard/webtorrent-desktop,michaelgeorgeattard/webtorrent-desktop,webtorrent/webtorrent-desktop,feross/webtorrent-desktop,feross/webtorrent-app,feross/webtorrent-desktop,feross/webtorrent-desktop,webtorrent/webtorrent-desktop,yciabaud/webtorrent-desktop,feross/webtorrent-app