Hello,
I created a new module in the header as per your instructions here http://www.joomla51.com/tutorials/item/creating-a-new-module-position-in-the-header-area-of-your-template

The module displays correctly in the center of the page on the desktop but is off the screen to the right on the mobile. How can I get it centered on the mobile as well? The CSS I used is below.

#newmodule {
height:50px;
margin:0;
padding:0;
position: absolute;
left:400px;
top:115px;
width:400px;
z-index:999;
}