Layout problem firefox

My site is wrong with the whole layout in firefox.

The link: http://cantinhonerd.com.br/

Hi @givagof,

I hope you are well today and thanks for posting here.

When i try to visit your shared site then i get security error as shown in the attached screenshot.

Could you please share me the screenshot of the issue so that i can help you?

Kind Regards,
Movin

The image is attached

I could see now that on firefox browser it’s happening on the home page of your site and other pages are displaying fine as shown in the attached screenshot.

Have you made any changes in the theme files?

I can see you are using WP-Super-Cache on your site so try clearing cache from it or temporary disabling it.

This can be due to plugin conflict on your site so please try temporary deactivating all plugins and see whether everything works fine and then enable the plugins one by one to see which plugin is conflicting if any.

I disabled all, and continued the same.

About change something, I do not change anything else.

I visited your site again on firefox browser and not it’s displaying security error as shown in the attached screenshot.

It seems your site is either hacked or got affected by virus so please contact security expert to resolve this security issue on your site.

I’m trying to solve the problem.
but if you continue, you will see how is the site.

as attached:

As said this is not the theme issue, I have tested it on my test site and it’s working fine for me using latest version of Activello theme which you can also confirm with theme demo site https://colorlib.com/activello/ It seems your site is either hacked or got affected by virus so please contact security expert to resolve this security issue on your site.

then did some tests.

I installed all the same via localhost.
and is normal, it can be?

Then please contact your hosting provider regarding this.