CSS3 Media Queries-优快云博客

本文介绍如何使用CSS3媒体查询来根据不同设备和分辨率定制样式。包括最大宽度、最小宽度、设备宽度等条件的应用实例。

CSS2 allows you to specify stylesheet for specific media type such as screen or print. Now CSS3 makes it even more efficient by adding media queries. You can add expressions to media type to check for certain conditions and apply different stylesheets. For example, you can have one stylesheet for large displays and a different stylesheet specifically for mobile devices. It is quite powerful because it allows you to tailor to different resolutions and devices without changing the content. Continue on this post to read the tutorial and see some websites that make good use of media queries.

CSS3 Media Queries(demo)

Check my demo and resize your browser window to see it in action.

Max Width

The following CSS will apply if the viewing area is smaller than 600px.

@media screen and (max-width: 600px) {
  .class {
    background: #ccc;
  }
}

If you want to link to a separate stylesheet, put the following line of code in between the <head> tag.

Min Width

The following CSS will apply if the viewing area is greater than 900px.

@media screen and (min-width: 900px) {
  .class {
    background: #666;
  }
}

Multiple Media Queries

You can combine multiple media queries. The following code will apply if the viewing area is between 600px and 900px.

@media screen and (min-width: 600px) and (max-width: 900px) {
  .class {
    background: #333;
  }
}

Device Width

The following code will apply if the max-device-width is 480px (eg. iPhone display). Note: max-device-width means the actual resolution of the device and max-width means the viewing area resolution.

@media screen and (max-device-width: 480px) {
  .class {
    background: #000;
  }
}