Hover over me
Description:
This example shows how to create a tooltip using HTML and CSS. The `title` attribute of the `span` element contains the text to display in the tooltip. The CSS sets the position of the `span` element to relative and adds a `:before` pseudo-element that displays the tooltip. The `visibility` and `opacity` properties of the `:before` pseudo-element are used to show and hide the tooltip, and the `transition` property is used to create a fade-in effect.
Package/Library:
This code does not use any external package/library.