Hi bowlschat
If you are referring to the white border as showed in img below then it is the navhelper block
You can hide it in custom.css
.t3-navhelper {
display:none!important;
}
The same at footer is the mainbody block
you can hide it adding to custom.css
.t3-mainbody {
display:none!important;
}
If you want to keep both indeed you can create a custom class and use it in menu item page class
e.g.
.home.t3-navhelper {
display:none;
}
.home.t3.mainbody {
display:nnoe;
}
Then add the class home at your home menu item in page class tab
Hope it helps