MD Settings: polish up some top-level buttons

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 11 matching lines @@
         color: #969696;
       }
 
       iron-icon[icon=done] {
         color: rgb(0, 128, 0);
       }
 
       paper-button {
         margin: 0;
         min-width: auto;
-        padding: 0;
       }
 
       paper-button[toggles][active] {
         background-color: LightGray;
       }
 
       span ~ a {
         -webkit-margin-start: 4px;
       }
 
       paper-button.primary-button {
         --paper-button: {
           color: rgb(66, 133, 244);
+          font-weight: 500;
           text-align: start;
-          text-transform: none;
-          font-weight: 500;
         };
+        margin: 0 -0.57em;  /* Offsets default paper-button padding. */
       }
 
       paper-button.secondary-button {
         --paper-button: {
           color: #5a5a5a;
           text-decoration: none;
           font-weight: 500;
         };
       }
 
       paper-button.tertiary-button {
         --paper-button: {
           color: rgb(51, 103, 214);
+          font-weight: 400;
           text-decoration: none;
-          font-weight: 400;
         };
       }
 
       paper-radio-button {
         --paper-radio-button-checked-color: var(--google-blue-500);
         --paper-radio-button-label-spacing: 18px;
         --paper-radio-button-unchecked-color: #969696;
         -webkit-margin-start: 2px;
       }
 
       .text-elide {
         overflow: hidden;
         text-overflow: ellipsis;
         white-space: nowrap;
       }
 
       .button-row {
         display: flex;
         margin-top: 25px;
       }
 
       .button-strip {
         text-align: end;
       }
 
       .list-frame {
         @apply(--layout-center);
-        display: block;
         -webkit-padding-end: 20px;
         -webkit-padding-start: 48px;
+        display: block;
         padding-bottom: 0;
         padding-top: 0;
       }
 
       .list-frame select {
         -webkit-margin-start: 4px;
       }
 
       .list-frame .secondary {
         color: #969696;
@@ skipping 35 matching lines @@
 
       .list-item > paper-icon-item {
         padding: 0;
       }
 
       /* This button has no ink ripple. */
       .list-item.list-button {
         @apply(--layout-center);
         color: rgb(66, 133, 244);
         font-weight: 500;
-        padding: 0;
-        text-decoration: none;
-        text-transform: none;
-      }
-
-      .link-button {
-        color: rgb(61, 130, 243);
-        padding: 6px 0;
-        text-transform: none;
       }
 
       .settings-card {
         padding: 8px 0;
       }
 
       .settings-box {
         @apply(--layout-center);
         border-top: 1px solid var(--paper-grey-300);
         display: flex;
@@ skipping 58 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>