How to set line space/height

With this classic theme, this can only be done with custom CSS. Here, for example, the line height is changed everywhere:

body { line-height: 1 }

If you want to change specific areas, please let us know. You can quickly customize many things using CSS.

You need to enter the CSS code under Appearance > Customizer > Additional CSS.

There is also a support forum for this theme where you can ask questions: https://wordpress.org/support/theme/twentyeleven/

Under Appearance > Customizer > Additional CSS, you should see an input field. That’s where you need to enter the code.

Unfortunately, I don’t know what you mean by “header rotation”. There are thousands of free themes to choose from: https://wordpress.org/themes/ – one of them will probably meet your requirements and wishes.

As mentioned above, it would be helpful to know exactly which parts of the text you want to customize. Then we could give you much more specific advice. Unfortunately, you haven’t shared a link to the website in question, which is why we can’t really help you any further here.

I see the following options for you:

• Adapt the above code to your specific needs. To do this, you would need to examine the output in your frontend with a developer tool in your browser to find out which CSS properties you need to set.
• Show us a link to your page and write exactly what you want to customize and where. Then we could help you better here in the forum.
• Change the theme to one where you can adjust such settings with a click. Nowadays, you rarely need to solve this with custom CSS.
• Find someone who can help you personally. You can find someone like that here, for example: https://jobs.wordpress.net

Regarding your “header rotation” request: I think there are many ways to do this. Many page builders already offer this feature, so it depends less on the theme. Plugins can certainly be used for this as well.

where shall I share its URL here?

Just post the URL here in a reply. Make sure that the URL is publicly accessible. It is not necessary to put your test page in any menu or link to it elsewhere. Your URL alone would suffice.

However, please note that URLs posted here in this form are public and will not be removed by moderators. When opening a topic here in the forum, there is actually a separate input field for this purpose, the contents of which are not public.

And since you mention the test page: is your question actually about a single text rather than the entire website? A little more detail about what your actual concern is would be helpful in order to answer you better.

Besides is there a words-editor plug-in?

What exactly do you mean by this term? Is it short for “WordPress Editor”? This is already included in WordPress itself, in two versions: the block editor and the classic editor. Both do exactly what you describe here in broad terms; it is the basic task of WordPress: to make it as easy as possible to enter content into websites. Here, too, it would be helpful if you could describe your request in more detail.

How you add font sizes depends entirely on which editor you’re using. Since you’re using the Twenty Eleven theme, I’d guess you’re using the classic editor. It doesn’t have any built-in options, but there’s a plugin for making changes to the editor’s style settings: https://wordpress.org/plugins/tinymce-advanced/

However, if you’re using the block editor, you can adjust the font sizes as needed via the interface. This is the editor you’re actually comparing to LibreOffice. It offers far more content formatting options than the classic editor. Here’s an introductory video: https://learn.wordpress.org/lesson/intro-to-the-site-editor/

If you want to switch to the block editor, you’ll probably need to optimize all your website’s content. I think the theme should be compatible, but you need to check very carefully. Definitely create a backup beforehand. To switch over, you probably (!) only need to check which plugin in your project is responsible for you using the classic editor.

I am only aware of one option in the “Advanced Editor Tools” plugin where you can change the font sizes from pt to px. This can be found under Settings > Advanced Editor Tools > Classic Editor as a checkbox labeled “Font sizes”.

If you are looking for more detailed support for the plugin, I would recommend their support forum: https://wordpress.org/support/plugin/tinymce-advanced/

I still don’t know exactly what you’re getting at. There are many things that can cause “width between lines”. A concrete example with a link to the page in question would be really helpful if we want to be able to help you here. Otherwise, we can only guess.