Both em and percentage are defined in relation to other elements or properties.
For example, with text-indent, it is related to the width of the paragraph, while with font size, it is related to the browser's default size.
The question arises - why do both em and percentage exist if they serve the same purpose?
Is there documentation available regarding what each element is relative to (as shown in the examples)? How can one determine what their values are relative to?
Em units and percentage values serve different purposes. Em units are calculated based on the element's font size unless specified otherwise, while percentages vary in relation to specific values depending on the property being used.
There are limitations to where percentage values can be applied, such as with borders, whereas em units can be utilized for length quantities across various properties.
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