Different approach to NTP layout

chrome/browser/resources/new_tab_theme.css

 html,
-#top-spacer,
-.miniview,
-.section > h2 .mask,
 .section > h2 .settings-wrapper,
 .section > h2 span {
   background-attachment: fixed;
   background-color: $2; /* COLOR_NTP_BACKGROUND */
   background-image: url(chrome://theme/IDR_THEME_NTP_BACKGROUND?$1);
   background-position: $3;
   background-repeat: $5;
 }
 
 html[bookmarkbarattached='true'],
-html[bookmarkbarattached='true'] #top-spacer,
-html[bookmarkbarattached='true'] .miniview,
-html[bookmarkbarattached='true'] .section > h2 .mask,
 html[bookmarkbarattached='true'] .section > h2 .settings-wrapper,
 html[bookmarkbarattached='true'] .section > h2 span {
   background-position: $4;
 }
 
 body {
   color: $8; /* COLOR_NTP_TEXT */
   height: 100%;
   overflow: auto;
 }
@@ skipping 75 matching lines @@
 .link-color {
   color: $9; /* COLOR_NTP_LINK */
 }
 
 :link,
 :visited,
 .link {
   color: $$6; /* COLOR_NTP_LINK_UNDERLINE */
 }
 
-.section:not(.hidden) > h2 > .mask {
+.section:not(.hidden) > h2 {
   color: $$9;
 }
 
-.section.hidden:not([noexpand]) > h2:hover > .mask {
+.section.hidden:not([noexpand]) > h2:hover {
   color: $$9;
 }
 
 .section > h2 .back {
   background-image:
       -webkit-gradient(radial, 50% -1753, 1750, 50% -1753, 1770,
                        from($$$1), to($$$3));
   border-top: 1px solid $$$1; /* COLOR_NTP_SECTION_HEADER_RULE */
 }
 
 .section.hidden > h2 .back {
   background: none;
   border-color-top: $$$2; /* COLOR_NTP_SECTION_HEADER_RULE_LIGHT */
 }
 
 .section.hidden:hover > h2 .back {
   border-color-top: $$$1; /* COLOR_NTP_SECTION_HEADER_RULE */
 }
 
 .section > h2 > .settings {
   background-color: $2; /* COLOR_NTP_BACKGROUND */
   border-color: $2; /* COLOR_NTP_BACKGROUND */
 }
 
-#apps-section .app a {
+.app a {
   color: $8; /* COLOR_NTP_TEXT */
 }
 
-#apps-section .app:hover > .front > a,
-#apps-section .app > .back {
+.app:hover > .front > a,
+.app > .back {
   color: $$3; /* COLOR_NTP_SECTION_TEXT */
   background-color: $$1; /* COLOR_NTP_SECTION */;
 }