In the WordPress API is there a way to set the width of the post/page container? Or is this solely up to the theme developer - they decide and have total control over the width of the post/page container?
Usecase; my plugin will allow users to create sliders and place them in posts/pages. I want to allow them to create full-width sliders that take up the full width of the page.
I know there is a global
$content_width but thats for media max widths I think. Is there something similar to that variable but for post/page width? This way my plugin can set that global when the shortcode is called and the slider content is inserted.