Added Polymer 0.5.4

polymer_0.5.4/bower_components/core-tooltip/core-tooltip.css

 /* Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
 This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
 The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
 The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
 Code distributed by Google as part of the polymer project is also
 subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt */
 
 :host {
   box-sizing: border-box;
   position: relative;
   display: inline-block;
   outline: none;
 }
 
 :host(:hover:not([disabled])) .core-tooltip {
   visibility: visible !important;
 }
 
 :host([focused]) .core-tooltip {
   visibility: visible !important;
 }
 
 .core-tooltip:not(.show) {
   visibility: hidden;
 }
 
 .core-tooltip {
   position: absolute;
   font-size: 10px;
-  font-family: sans-serif;
+  font-weight: 500;
   padding: 8px;
   color: white;
-  background-color: rgba(0,0,0,0.8);
+  background-color: rgba(0, 0, 0, 0.9);
   box-sizing: border-box;
   border-radius: 3px; /* TODO: not in spec. */
   white-space: nowrap;
   line-height: 6px;
   z-index: 1002; /* TODO: this is brittle. */
   -webkit-user-select: none;
   user-select: none;
 }
 
 :host([large]) .core-tooltip {
@@ skipping 51 matching lines @@
   top: 100%;
   left: calc(50% - 4px);
   border-top-color: rgba(0,0,0,0.8);
 }
 
 .core-tooltip.right::after {
   right: 100%;
   top: calc(50% - 4px);
   border-right-color: rgba(0,0,0,0.8);
 }