A container is a frame that surrounds a module and usually includes the module's title and its graphical styles.
A container is a frame that surrounds a module and usually includes the module's title and graphical styles. To change a module's container:
Go to the settings of the desired module.
Navigate to the Page Settings > Advanced Settings tab.
In the Appearance section, use the Module Container dropdown menu to select your preferred container from the list of installed skins.
By selecting "[None Specified]," the module will be displayed without any frame, which is useful for specific design needs.