The _javascript technique of Pull-down menu implemented by js+css relative positioning

This article illustrates the Drop-down menu of js+css relative positioning implementation. Share to everyone for your reference. Specifically as follows:

Here is the use of relative positioning, but the effect can also be used time to trim, this is only the realization of the general function, there are many details are not modified.

The screenshot of the running effect is as follows:

The online demo address is as follows:

http://demo.jb51.net/js/2015/js-css-ab-fix-menu-codes/

The specific code is as follows:

The

wants this article to help you with your JavaScript programming.