MD Settings: remove .settings-card to make spacing more consistent

chrome/browser/resources/settings/settings_shared_css.html

 /* Copyright 2016 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file. */
 
 /**
  * @fileoverview
  * Common styles for Material Design settings.
  */
 
 <dom-module id="settings-shared">
@@ skipping 144 matching lines @@
       .list-item > .start {
         flex: 1;
         overflow: hidden;
         white-space: nowrap;
       }
 
       .list-item > paper-icon-item {
         padding: 0;
       }
 
-      .settings-card {
-        padding: 8px 0;
+      /* This button has no ink ripple. */
+      .list-item.list-button {
+        @apply(--layout-center);
+        color: rgb(66, 133, 244);
+        font-weight: 500;
       }
 
       .settings-box {
         @apply(--layout-center);
         border-top: 1px solid var(--paper-grey-300);
         display: flex;
         min-height: 40px;
         padding: 0 20px;
       }
 
@@ skipping 53 matching lines @@
       .vertical-list > div:first-of-type {
         border-top: none;
       }
 
       .vertical-list > div {
         border-top: 1px solid var(--paper-grey-300);
       }
     </style>
   </template>
 </dom-module>