Web IDE directory tree indentation: Why are the rendering results of Google Chrome and Firefox browsers different?

Analysis of rendering problems of Web IDE directory tree in different browsers

This article analyzes the rendering differences that occur after renaming the Web IDE directory tree file in Google Chrome and Firefox. Specifically, the directory tree indentation disappears in Google Chrome, while Firefox remains normal. Google Chrome Developer Tools show that the problem element is styled as margin-right: -17px , which is the opposite of the expected indentation effect (which should be a positive margin-left ).

Before the rename operation, both browsers display the directory tree indentation normally; after renaming, only Google Chrome will see the indentation disappear, and the exception margin-right value will be displayed.

This difference may stem from subtle differences in CSS attribute parsing and rendering mechanisms by Google Chrome and Firefox. margin-right: -17px should have moved the element to the right, but Google Chrome wrongly interprets it as indentation disappearing under interference from a specific implementation of the Web IDE or other CSS styles. Firefox browser handles this style differently to avoid this problem.

Solution:

A straightforward solution is to modify the Web IDE source code and change the wrong margin-right: -17px to margin-left: 17px , thereby correctly controlling the left margin of the element and achieving the expected indentation. If the source code cannot be modified directly, you need to analyze the CSS style of the Web IDE in depth, find other style rules that may conflict with margin-right attribute, and make adjustments.

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