Operation Manual

454

Last updated 3/28/2012

Chapter 16: Designing for multiple screens

and devices

Creating media queries (CS5.5 and later)

You can use media queries to specify CSS files based on the reported characteristics of a device. The browser on a

device checks the media query and uses the corresponding CSS file to display the web page.

For example, the following media query specifies the phone.css file for devices that are 300-320 pixels wide.

300px) and (max-width: 320px)">

For an extensive introduction to media queries see Don Booth’s article on the Adobe Developer Center

www.adobe.com/go/learn_dw_medquery_don_en.

For more information on media queries from the W3C see www.w3.org/TR/css3-mediaqueries/.

Create a media query

In Dreamweaver, you can create a site-wide media query file, or a document-specific media query.

Site-wide media query file Specifies display settings for all pages in your site that include the file.

The site-wide media query file acts as the central repository for all media queries in your site. After you create this file,

link to it from pages in your site that must use the media queries in the file for their display.

Document-specific media query The media query is inserted directly into the document, and the page is displayed

based on the inserted media query.

1 Create a web page.

2 Select Modify > Media Queries.

3 Do one of the following:

• To create a site-wide media query file, select Site Wide Media Queries File.

• To create a document-specific media query, select This Document.

4 For site-wide media query, do the following:

a Click Specify.

b Select Create New File.

c Specify a name for the file, and click OK.

5 It is possible that some devices do not report their actual width. To force devices to report their actual width, ensure

that the option Force Devices To Report Actual Width is enabled.

The following code is inserted into your file when you choose this option.

6 Do one of the following:

• Click "+" to define the properties for the media query file.