[MD settings] change button padding and placement

chrome/browser/resources/settings/people_page/people_page.html

Index: chrome/browser/resources/settings/people_page/people_page.html
diff --git a/chrome/browser/resources/settings/people_page/people_page.html b/chrome/browser/resources/settings/people_page/people_page.html
index 01421172d609a035dfea033e5b9422bfc6b18ed9..8d337ea30180e85ffcf66c08831ef2e139b00198 100644
--- a/chrome/browser/resources/settings/people_page/people_page.html
+++ b/chrome/browser/resources/settings/people_page/people_page.html
@@ -79,10 +79,12 @@
           </div>
 <if expr="not chromeos">
           <template is="dom-if" if="[[!syncStatus.signedIn]]">
-            <paper-button class="action-button" on-tap="onSigninTap_"
-                disabled="[[syncStatus.setupInProgress]]">
-              $i18n{syncSignin}
-            </paper-button>
+            <span class="secondary-action">
+              <paper-button class="action-button" on-tap="onSigninTap_"
+                  disabled="[[syncStatus.setupInProgress]]">
+                $i18n{syncSignin}
+              </paper-button>
+            </span>
           </template>
           <template is="dom-if" if="[[syncStatus.signedIn]]">
             <span class="secondary-action">
@@ -107,7 +109,7 @@
 
         <template is="dom-if"
             if="[[isAdvancedSyncSettingsVisible_(syncStatus)]]">
-          <div class="settings-box">
+          <div class="settings-box button-strip">
             <paper-button on-tap="onSyncTap_" class="primary-button">
               $i18n{syncPageTitle}
             </paper-button>
@@ -185,7 +187,7 @@
         </template>
 </if>
 
-        <div class="settings-box">
+        <div class="settings-box button-strip">
           <paper-button class="primary-button" on-tap="onManageOtherPeople_">
             $i18n{manageOtherPeople}
           </paper-button>