In the Content Library, find the Countdown Timer for Email/Website widget.
1. Select your background and number colors.
2. Select an end date and end time.
3. Select if you would like the timer centered in a table.
4. Click "Generate Countdown Timer".
5. Copy the generated code.
Go back to the page you are placing the Countdown Timer on.
Add an Embed Code element to your page.
Click on the Embed Code element.
Click on Edit Custom HTML.
Paste the code you copied from the Countdown Timer page into the window that pops up.
And that's it!