Adobe Dreamweaver CC 2014 v.13 - Manual (Page 144)

Properties
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selectors for that media query. If no CSS or media queries are selected, this pane displays all the selectors in the document.
When you select Global in the @Media pane, all the selectors that are not included in a media query of the selected source are displayed.
Displays properties that you can set for the specified selector. For more information, see Set properties .
CSS Designer is context-sensitive. This means, for any given context or selected page element, you can view the associated selectors and
properties. Further, when you select a selector in CSS Designer, the associated source and media queries are highlighted in the respective panes.
CSS Designer showing the properties of the image selected in Live view
CSS Designer showing the properties of the heading selected in Live view
When you select a page element, 'Computed' is selected in the Selectors pane. Click a selector to view the associated source, media
query, or properties.
To view all the selectors, you can choose All Sources in the Sources pane. To view selectors that do not belong to any media query in the
selected source, click Global in the @Media pane.
Create and attach style sheets
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