Add a margin to a specific page in Studio theme

[Seraphi]

Hi, can anyone help me to add a margin and also a header to my gallery page. All images are hugging left on desktop and mobile. 
No experience of editing the code but somehow managed to get  new page template and get the images in. 
Would be so grateful for any help. 

[Sweet_Savior_3]

Hello @Seraphi 

Thanks for contacting Shopify community. This is custom requirement which needs code changes. So i would recommend you to contact the theme developer or hire a developer to help you with your request. Don't hesitate to open an email thread if you need any help.

Thanks

[Seraphi]

Thanks for your time in replying.