VIDEO FULL SIZE (NO ASSISTANCE)??????

Please respect the support team and do not use "uppercase" typo.
Next time you will write in "uppercase" nobody will answering you!

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You can edit the php file ( media querie) > layouts/template.php ( see image attached)
How to use media queries:
developer.mozilla.org/en-US/docs/Web/CSS.../Using_media_queries

Sorry but we can not support any of your customizing!
We dont know what do you have done and what do you want.

The org Theme is working well and have no issues.
Dont know what you have done! Please understand that we do not fix your mistakes.

We are committed to help you with any type of support query, however we can't provide extensive help in terms of customizations. In general customizations may look simple but you will require solid knowledge of web technologies and programming skills to do them or hire a professional who can do it for you.