Steps to reproduce:
- Go into settings > Configure Document Layout
- Choose layout boxed
- set a company tagline
- click "download PDF Preview"
Issue:
The styling of the company tagline is not the same on the pdf and
the preview
Cause:
Module lxml from etree would not interpret the html the same way as
the browser. In the browser, we would have a 'p' markup inside of the
'h4' for the title. Effectively applying the style from the css
sheet. In the pdf, the lxlm module place the 'p' markup after the
'h4'. Therefore it would not receive the styling of the 'h4'.
Reproduction:
```
>>> from lxml import html
>>> html.tostring(html.fromstring('<div><h4><p>hi</h4></div>'))
b'<div><h4></h4><p>hi</p></div>'
```
Solution:
Modify the structure so we have a `<div class="h4"/>` element that does
not have this issue. In version before 16.0, a CSS hack was used
to keelp the structure the same.
opw-2846247
closesodoo/odoo#101666
X-original-commit: 5aaf60809f596f4ec3ae9c3bc4795b3044da0281
Signed-off-by: Nicolas Lempereur (nle) <nle@odoo.com>