www.wysiwygwebbuilder.com

Hmmm... Sounds limiting.

That is why I have added 'Global Replace'.
However, this cannot find/replace HTML, because replacing tags or text could lead to errors in the code.

Find/replace is a standard Windows feature, it can only be used on standard text object (which are actually rich text boxes, just like for example wordpad).

I'm sorry, WWB is not a ASP.NET development environment.

You are the first user that has asked for this feature, it has never been requested befor,.
But you can post suggestions in the 'Suggestions' of this forum'. Then other users can let me know if they will find this useful too.

You cannot search for HTML, because the HTML does not exist until you publish the page.

You can add custom code via the HTML object.
http://wysiwygwebbuilder.com/add_html.html

Please remove all custom code and/or third party extensions and then try again.

The only question then is, can you change the Twitter Card or OG without nuking the keywords.

I'm sorry, there is no separate setting for this.

Yes, if you clone the page then all breakpoints will be included.

I'm sorry, there really is no easier way. This is very complicated 'behind the scenes'. There are too many things that can go wrong and could corrupt the page layout. That is why I decided that it's safer not to allow it.

No, I think it's better to use one of the responsive menus for that.

The menu is not on a page header.

- insert a page header
- set the stack level to 'in front of content'
- add the menu to the page header

my previous web design software, we could add this code within the html of the panel/menu:

You can add custom code via Page HTML or an HTML object.

To be able to help you I need to see what you have done.

Related FAQ:
viewtopic.php?f=10&t=82134

The elements of a master page will always be at the background otherwise you cannot place other objects on top of it.
Note that normally a dropdown menu is part of a page header. In that case you can set the stack order to 'in front of content'.