What is the Difference between px, rem and em?
In CSS you can find different units of measurement for all the elements that make up a document. the most used by all are the px , however there are many more as explained in MDN. This time We are going to focus on the main differences between absolute units and relative units em and rem .
The absolute units do not change in size, while the relative units change according to the font size of the parent element.
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