paper-scroll-header-panel: An HTML repository from alyyasser

##<paper-scroll-header-panel>

paper-scroll-header-panel contains a header section and a content section. The header is initially on the top part of the view but it scrolls away with the rest of the scrollable content. Upon scrolling slightly up at any point, the header scrolls back into view. This saves screen space and allows users to access important controls by easily moving them back to the view.

Important: The paper-scroll-header-panel will not display if its parent does not have a height.

Using layout classes or custom properties, you can easily make the paper-scroll-header-panel fill the screen

<body class="fullbleed layout vertical">
  <paper-scroll-header-panel class="flex">
    <paper-toolbar>
      <div>Hello World!</div>
    </paper-toolbar>
  </paper-scroll-header-panel>
</body>

or, if you would prefer to do it in CSS, just give html, body, and paper-scroll-header-panel a height of 100%:

html, body {
  height: 100%;
  margin: 0;
}
paper-scroll-header-panel {
  height: 100%;
}

paper-scroll-header-panel works well with paper-toolbar but can use any element that represents a header by adding a paper-header class to it.

Note: If the class paper-header is used, the header must be positioned relative or absolute. e.g.

.paper-header {
  position: relative;
}

<paper-scroll-header-panel>
  <div class="paper-header">Header</div>
  <div>Content goes here...</div>
</paper-scroll-header-panel>

Styling

=======

The following custom properties and mixins are available for styling:

Custom property	Description	Default
--paper-scroll-header-panel-full-header	To change background for toolbar when it is at its full size	{}
--paper-scroll-header-panel-condensed-header	To change the background for toolbar when it is condensed	{}
--paper-scroll-header-panel-container	To override or add container styles	{}
--paper-scroll-header-panel-header-container	To override or add header styles	{}

alyyasser/paper-scroll-header-panel

Styling