I want to create a specific page (e.g. On_Line_App.html), where the Javascript (Three.js) editor will run and show the WebGL content to the end user.

If I place it into a module then its rendering context is being clipped by the Joomla styling structure. I want it to cover the whole client area of browser. I'm looking fro any way to change this styling, that would be valid solely for On_line_App.html page. Rest of the pages in the web site must retain original styling.

I found a [this quide](https://docs.joomla.org/Using_the_Page_Class_Suffix_in_Template_Code], on how to do that, but it's a bit complicated for the novices. Is there any easier way to accomplish this?

I want to create a specific page (e.g. On_Line_App.html), where the Javascript (Three.js) editor will run and show the WebGL content to the end user.

If I place it into a module then its rendering context is being clipped by the Joomla styling structure. I want it to cover the whole client area of browser. I'm looking for any way to change this styling, that would be valid solely for On_line_App.html page. The rest of the pages in the web site must retain the original styling.

I found a guide on how to do that, but it's a bit complicated for the novices. Is there any easier way to accomplish this?