I was often wondering, if for quality reasons I should prefer whole number pixel values over fractions of pixels when positioning text with CSS in web design. E. g., will text be rendered crispier if it has a padding of 12px than a padding of 11.25px?

I am reading the “Positioning Techniques” of this article on MDN.
It talks about “Absolute positioning elements can be fixed to a position relative to its nearest positioned ancestor element”.

In this snippet, the number 5 appears in the margin to the left of the word “incididunt”, and a blue mark appears inside the word, as desired.

I have a paragraph which has certain words that have a description (in glossary table), so in each word that exists in the glossary there should be a plus sign, when i click it, it should show the description in a box over the text. each word that has a description is wrapped in glossary_container(positioned relative) class, and each description has a class glossary_description positioned absolute).