HTML and CSS Reference
In-Depth Information
e Z-Index CSS Property: A
Comprehensive Look
Louis Lazaris
Most CSS properties are quite simple to deal with. Often, applying a CSS
property to an element in your markup will have instant results — as soon as
you refresh the page, the value set for the property takes e
"
ect, and you
see the result immediately. Other CSS properties, however, are a little more
complex and will only work under a given set of circumstances.
The
z-index
property belongs to the latter group.
z-index
has
undoubtedly caused as much confusion and frustration as any other CSS
property. Ironically, however, when
z-index
is fully understood, it is a very
easy property to use, and o
"
ers an e
"
ective method for overcoming many
layout challenges.
In this article, we'll explain exactly what
z-index
is, how it has been
misunderstood, and we'll discuss some practical uses for it. We'll also
describe some of the browser di
"
erences that can occur, particularly in
previous versions of Internet Explorer and Firefox. This comprehensive look
at
z-index
should provide developers with an excellent foundation to be
able to use this property confidently and e
"
ectively.
