Avoid black on white, to much contrast hurts the eye, use a dark grey
instead.
Highlight Sundays, and show month boundaries explicitly with strong
dashed border.
Factor out some manual set styles to classes and use them instead,
decoupling logic and styling a bit more.
Use span elements for plain text stuff, which should not be a block
(e.g., div) element.
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
435a6c5e0a