Simon Willison: Using bookmarklets to experiment with CSS
They’re all useful, but by far the most useful for learning CSS are test styles and edit styles. test styles opens a popup window in which you can type CSS rules that will be applied instantly to the page you are viewing, while edit styles does the same thing but pre-populates the window with the style sheets of the current site, allowing you to edit them in place. ancestors is also useful; it shows the element hierarchy of the element your mouse is currently over, which can help you see what selector you need to use to modify that element’s style.
6/8/2003
Mozilla CSS Bookmarklets
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2/8/2003
Live Headers
mozdev.org – livehttpheaders: index
Welcome to the livehttpheaders project.
The goal of this project is to adds information about the HTTP headers in two ways:
First by adding a ‘Headers’ tab in ‘View Page Info’ of a web page.
Second by adding a tool in the ‘Tools->Web Development’ menu to be able to display http headers in real time (while pages are being downloaded from the Internet.
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