Hide the feed name and publish date columns in the entries list, for viewports below the xs- breakpoint.
Hide the big feedbunch icon in the start page for viewports under the xs- breakpoint.
Wider column for the titles in sidebar links.
"Loading entries" spinner looks better in smartphone screens.
Separate the "loading..." text and the animated spinner in two rows, at all resolutions.
Unified the look of the "loading..." and "no entries" messages.
Hide feed favicons in the sidebar for viewport of sm- width, so that the unread badge has enough space to fit into its allocated width.