# National Aeronautics and Space Administration

## Goddard Space Flight Center

### Search:

Flight Projects | Sciences and Exploration

Skip Navigation (press 2)
- First Tab
- Second Tab
- Third Tab
- Fourth Tab

- Tab Navigation
- Banners
- Top Navigation
- Left Navigation
- Columns & Layout
- General Styles & Tables
- Building Your Site
- Best Practices & Policies

## External Links

- Here is where you can link to websites, either inside or outside of NASA
- The left navigation buttons above should be like a table of contents into your site
- Each page linked from the left navigation buttons should have the same navigation button set

## Top Navigation Section Section: No Top Navigation

Top navigation should represents your site's major sections. It is not recommended that you use more than six or seven items in it. A top navigation item should link only to pages on your site. If you need to link to other sites, use the External Link section on the left sidebar (located under the left navigation section).

### Please read instructions carefully before beginning work

This page explains how to remove the banner section.

## First and Last Navigation Items

The first and last items on the top navigation menu have special classes. First item (from the left) has the following class:

Last item has the following class:

## Activating Menu Item

To activate an item (highlight it), you should add an active class to the list item:

## Removing the Top Navigation Section Safely

In order to eliminate the banner section from your page, look for following section in your html file:

Simply remove the code between the commented area in that section.

## How to create sub navigation

To create sub navigation, add the links as a list

Within the list item you need the sub navigaiton: