Heya! Let me start this off by saying this is like my second website I'm making in muse, the first one being a trying out stuff site.
I am now making a site for my new portfolio/resumé which I am gonna put in use soon, BUT;
I seriously don't get Breakpoints (which might make this a whole different story/question)
and when I preview in the browser, it adds a horizontal scroll bar at the bottom, and when you go to the right side of the site, the whole background image is shifted and scaled up (and yes I have tried pushing some buttons, but it didn't help the problem).
By the way, this is just the beginning of the site, I dont have a menu yet and I only made the landing and the "About me" part, also try to be so noob friendly as you can , I seriously dont know the name of everything in Muse since I just started using it. Thanks!
My project: https://adobe.ly/2FReqLH
And also, I made a prototype in Adobe XD for what its gonna need to look like: https://xd.adobe.com/view/4e8d8319-c34c-4d8b-81a5-ac977912487b?hints=off (font used is Mermaid)
Would you be terribly offended if I showed you how to quickly build your site responsively with Bootstrap & Dreamweaver?
I ask because you're still new to Muse and hopefully don't have a lot invested in it. yet In case you haven't heard, Muse is no longer being developed.
I would also suggest you to consider the suggestion made by our esteemed web expert above.
However, still to help with Muse I would first ask you to go through and understand this tutorial - Create a responsive website.
Later in your site please make sure that all the objects should confine within the white space failing to which might cause issues.