MD Settings: Device settings polish

chrome/browser/resources/settings/device_page/display.html

Index: chrome/browser/resources/settings/device_page/display.html
diff --git a/chrome/browser/resources/settings/device_page/display.html b/chrome/browser/resources/settings/device_page/display.html
index a3d4928568292caeb47d772f3a9dcd16e6b5c5d2..b0dea454858dd4deaa4f01fa652d436fa7c78fb7 100644
--- a/chrome/browser/resources/settings/device_page/display.html
+++ b/chrome/browser/resources/settings/device_page/display.html
@@ -40,10 +40,6 @@
        margin: 10px 0;
      }
 
-     .title-text {
-       margin-top: 10px;
-     }
-
      .settings-box > paper-button:first-child {
        -webkit-padding-start: 0
      }
@@ -57,9 +53,9 @@
      } 
     </style>
     <div class="settings-box first layout vertical self-stretch">
-      <div class="title-text layout self-start">
+      <h2 class="layout self-start">
         $i18n{displayArrangementTitle}
-      </div>
+      </h2>
       <div class="secondary layout self-start"
           hidden="[[!hasMultipleDisplays_(displays)]]">
         $i18n{displayArrangementText}