Left/Right margins on header

Hello @devilmakq,

The header doesn’t have 100% width. If you want to set the header synchronized by the page sections, I would recommend using the custom header by your page builder.

Please follow the steps explained in this link:
https://docs.oceanwp.org/article/355-how-to-create-a-custom-header

Screenshot 1: https://postimg.cc/D85CYq6S
Screenshot 2: https://postimg.cc/R69sDGkn

Also, you can write your custom CSS for the header to set it 100% width on responsive sizes. You can learn how to use Chrome Developer Tools or Firefox Developer Tools to help you see and test changes to your CSS:
https://developers.google.com/web/tools/chrome-devtools/
https://developer.mozilla.org/en-US/docs/Tools
CSS Tutorial: https://www.w3schools.com/css/
For more information about media queries, please read this article:
https://www.w3schools.com/css/css_rwd_mediaqueries.asp

Best Regards