Troubles with z-index implementation in HTML

Seeking guidance on an html page containing a dropdown menu with z-index positioning, set absolutely with specific left and top values. The issue arises when the window is resized, causing the dropdown menu to shift position awkwardly. This problem seems to be related to absolute positioning.

Can anyone offer advice on how to address this issue? How can I ensure that the dropdown menu always remains in place? An image has been attached for reference.

Answer №1

Ensure the parent element has 'position: relative;' specified, as the top/left values are derived from the first parent element with a position set. If the parent element lacks a position set, it will continue up to the next ancestor element until ultimately defaulting to the body.

For example:

http://jsfiddle.net/erinfreeman/AHWS2/

The div with id 'one' has position relative, so the child div uses its bottom/right coordinates based on that. The div with an id of 'two' does not have position set, causing the child div to look to the immediate parent for positioning.

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