Inserting a similar heading and footer as my WordPress page

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I have recently launched a new webpage (in Shopify) after deciding that it was time to move forward from WordPress.

I would like to make the webpage as similar as possible, and I would like some help with the header and footer. 


WordPress website:

New Shopify website:


I am currently using the Boundless Theme (and would like to continue doing so). 

If someone knows how I can create a similar look, I would appreciate it. 
Thank you!