Allow the main container to expand up to 1080p

This small change benefits and effects only desktops, but allows
a little more breathing room for 1080p screens and above.

app/assets/stylesheets/earthworks.css

@@ -6,7 +6,7 @@
 
 /* Selects both #main-content and navbar containers */
 #main-container, .navbar-search > *, header .container, #feedback .container, #pre-footer .container, #su-footer .container {
-  max-width:  1600px;
+  max-width: 1920px;
 
   @media (min-width: 575.98px) {
     padding-inline: 60px;