Hide module if screen width is too small

Hi,
How can I automatically hide the module is the screen width is less than the spinner width?

Hello,

You can’t detect the Spinner width in CSS, but let’s assume it’s 767px and the module position is “header1”. In this case, try adding this in CSS file:

If width is different, change value 767px. If module position is different change “header1” (keep “mp_” prefix).

Clear cache on mobile device browser before testing.

Regards,
Milos

Which css file should I edit?

You can add it in the module's CSS file:
/modules/mod_hot_spinner/tmpl/css/style.css

Regards,
Milos