Step #1: Open your website and Press F12 to launch the tool. The user would be able to see something like the below screen.
Take a note that “Element” tab is highlighted in the above screenshot. Thus, element tab is the one which displays all the HTML properties belonging to the current web page. Navigate to the “Element” tab if it is not opened by default on the launch.
You can also launch developer tool by right-clicking anywhere within the web page and by selecting “Inspect element” which is very similar to that of firebug’s inspection.
Step #2: The next step is to locate the id within the web page. Hover through the HTML code and the matching web element would be highlighted. see it to find id as shown in screenshot
frame url as i said above. Then open your builder and go to page>home>header>site navigation and click add and then choose link to external website and paste the url there.