Reply To: need help removing my web site right and left margins

[Atelierbram]

In ‘grid.css’ line 13, out comment or remove the width

.sp-container {
 margin-left: auto;
 margin-right: auto;
 /* width: 960px; */
}

or override the value for width somewhere else:

.sp-container {
 width: auto; 
}

BTW, speaking about page-filling, was this ‘code-dump’ necessary?
Do you use Chrome Devtools or Firebug?