[FIX] web_editor: fix background-sizing preview

with background-sizing option, user drags background image to adjust its
position using an overlay with the same content from snippet (cloned element).

Some CSS child selector rules will not be applied since the clone element has
a different container from the snippet content.

The CSS "background-attachment" property should be the same in
both parallax snippet & its copy, this will keep the preview more "wysiwyg"
instead of getting different result when bg position saved.

This can be improved by copying all style from snippet content and
override it with overlay related style (copying all css into overlay will
not work since it will change the style of its content too)

task-2327025

closes odoo/odoo#59769

X-original-commit: aaa3e63985789ea07464a5957eb18481e70a383f
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>

0 files changed, 0 insertions, 0 deletions