adjusting the z index

Hi.
The menu bar on my client's website http://www.thefeltingsource.com/ is going below the image the slider and making it impossible for users to clink on the blog drop-down menu.
How to I adjust the menu bar z index so this issue will get resolved?
If you could show me also WHERE is access this code to make this adjustment (I'm guessing it needs to be set higher), that would be helpful.
Thanks much!
-Dhara

Hello, if you add this to the stylesheet, which you can find by going to Settings->Administrator and clicking on Stylesheet in the panel titled "Theme Editor," this bit of code should solve your issue:

Code: Select all

.header {
  z-index: 10;
}

Please let me know if you have any more questions!