Product Version = NetBeans IDE 7.1 (Build 201112071828)
Operating System = Mac OS X version 10.6.8 running on x86_64
Java; VM; Vendor = 1.6.0_29
Runtime = Java HotSpot(TM) 64-Bit Server VM 20.4-b02-402

The Style Builder does not pick up attribute values correctly specifically when there is a "space" at the end of the attribute name,  and just before the ":".

For eg in the code:
.center_content {
    position : relative;
}

The space between the 'n' and ':' in 'position : relative;' results in Style Builder NOT displaying the position attribute as set to "relative" in the UI.

See attachment with file name "stylebuilder_screenshot1.png".

When the space is removed, then Style Builder correctly displays the attribute value.

For eg. in the code:
.center_content {
    position: relative;
}

The removing the space to result in the following attribute setting - 'position: relative;' results in Style Builder displaying the position attribute as set to "relative" in the UI.

See attachment with file name "stylebuilder_screenshot2.png"