Modern desktop browsers offer powerful integrated developer tools that let you get to the bottom of CSS or JavaScript problems quickly. Whether it’s Chrome, Firefox, Internet Explorer, or Safari, you will be able to inspect the DOM, apply CSS modifications in real-time, browse through loaded script files, set breakpoints to manually control the flow of execution and trace any exception or unexpected behaviour to its cause.
Now while that’s true for desktop browsers, it’s a little more difficult when you try to identify a problem in a browser on a mobile device.
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