In my code the paper drawer panel collapses while re sizing the browser but when i try it in mobile phone it do not collapses.
<!DOCTYPE html>
<html>
<head>
<title>PolyPolymer</title>
<script src="bower_components/webcomponentsjs/webcomponents.min.js"></script>
<link rel="import" href="elements.html">
</head>
<body fullblead layout vertical fit>
<paper-drawer-panel responsive-width="800px">
<paper-header-panel flex drawer>
<paper-toolbar>
<div class="title middle">Heading</div>
</paper-toolbar>
<div class="bottom row fit bottom">
</div>
</paper-header-panel>
<paper-header-panel flex main>
<paper-toolbar>
<paper-ripple center></paper-ripple>
<paper-icon-button icon="menu" paper-drawer-toggle></paper-icon-button>
<div flex class="indent title">Heading</div>
</paper-toolbar>
<div>
page content
</div>
</paper-header-panel>
</paper-drawer-panel>
</body>
</html>
I am using polymer 1.0
This is something i was struggling with for a while , what worked for me was putting this snippet in the head.
<meta name="viewport" content="width=device-width, initial-scale=1.0">
I hope it works for you like it did for me :)