[MD Extensions] Add newlines between style rules in HTML

chrome/browser/resources/md_extensions/pack_dialog.html

Index: chrome/browser/resources/md_extensions/pack_dialog.html
diff --git a/chrome/browser/resources/md_extensions/pack_dialog.html b/chrome/browser/resources/md_extensions/pack_dialog.html
index af3025bea359b9513967c3f71dd01cf06acd4e5b..e21e5f64360ac7b15e41a007c4bdb745b76c6b9d 100644
--- a/chrome/browser/resources/md_extensions/pack_dialog.html
+++ b/chrome/browser/resources/md_extensions/pack_dialog.html
@@ -16,6 +16,7 @@
         border-radius: 2px;
         padding: 0;
       }
+
       header {
         align-items: center;
         border-bottom: 1px solid var(--paper-grey-200);
@@ -24,12 +25,14 @@
         justify-content: space-between;
         padding: 12px 20px;
       }
+
       #main {
         color: var(--paper-grey-800);
         max-width: 800px;
         padding: 20px;
         width: 512px;
       }
+
       paper-button {
         align-items: center;
         border-radius: 2px;
@@ -39,21 +42,26 @@
         padding: 8px 12px;
         text-transform: uppercase;
       }
+
       .file-input {
         display: flex;
       }
+
       .file-input paper-input {
         flex: 1;
       }
+
       .file-input paper-button {
         -webkit-margin-start: 10px;
         color: var(--google-blue-500);
       }
+
       #buttons-container {
         display: flex;
         justify-content: flex-end;
         padding: 20px;
       }
+
       #confirm {
         -webkit-margin-start: 12px;
         background-color: var(--google-blue-500);