Since the redesign of some snippets, some customizations have been
broken. This commit adapts these customizations.
This commit also adjusts some spacing and font sizes.
task-4178078
Part of task-4177978
closesodoo/design-themes#953
X-original-commit: 7846e2cb96
Signed-off-by: Alice Gaudon (agau) <agau@odoo.com>