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third_party/polymer/components/paper-input/paper-input-container.html

 <!--
 @license
 Copyright (c) 2015 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
 -->
 
@@ skipping 92 matching lines @@
 <dom-module id="paper-input-container">
   <template>
     <style>
       :host {
         display: block;
         padding: 8px 0;
 
         @apply(--paper-input-container);
       }
 
-      :host[inline] {
+      :host([inline]) {
         display: inline-block;
       }
 
       :host([disabled]) {
         pointer-events: none;
         opacity: 0.33;
 
         @apply(--paper-input-container-disabled);
       }
 
+      :host([hidden]) {
+        display: none !important;
+      }
+
       .floated-label-placeholder {
         @apply(--paper-font-caption);
       }
 
       .underline {
         position: relative;
       }
 
       .focused-line {
         @apply(--layout-fit);
@@ skipping 169 matching lines @@
       .add-on-content.is-invalid ::content * {
         color: var(--paper-input-container-invalid-color, --error-color);
       }
 
       .add-on-content.is-highlighted ::content * {
         color: var(--paper-input-container-focus-color, --primary-color);
       }
     </style>
 
     <template is="dom-if" if="[[!noLabelFloat]]">
-      <div class="floated-label-placeholder">&nbsp;</div>
+      <div class="floated-label-placeholder" aria-hidden="true">&nbsp;</div>
     </template>
 
     <div class$="[[_computeInputContentClass(noLabelFloat,alwaysFloatLabel,focused,invalid,_inputHasContent)]]">
       <content select="[prefix]" id="prefix"></content>
 
       <div class="label-and-input-container" id="labelAndInputContainer">
         <content select=":not([add-on]):not([prefix]):not([suffix])"></content>
       </div>
 
       <content select="[suffix]"></content>
@@ skipping 284 matching lines @@
       var cls = 'add-on-content';
       if (invalid) {
         cls += ' is-invalid';
       } else if (focused) {
         cls += ' is-highlighted'
       }
       return cls;
     }
   });
 </script>