Improve docs for .paper-header

PolymerElements · Mar 21, 2016 · 6117e21 · 6117e21
1 parent 9e264cc
commit 6117e21
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diff --git a/paper-scroll-header-panel.html b/paper-scroll-header-panel.html
@@ -49,6 +49,8 @@
 `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.
 
+If the class `paper-header` is used, the header must be positioned relative or absolute.
+
 ```html
 <paper-scroll-header-panel>
   <div class="paper-header">Header</div>