https://support.google.com/campaignmanager/answer/4483813?hl=en&authuser=1&ref_topic=2826366
Create a display creative To get started, create your display creative in Campaign Manager 360 and upload assets. Follow the steps below to upload one...
set upcampaign managerdisplaycreativeshelp
https://www.campaignmonitor.com/css/grid/display/
The experts at Campaign Monitor created a free CSS tool to help you design pixel perfect email marketing. Learn about grid display here.
display campaignmonitor
https://support.google.com/firebase/answer/7392275?authuser=1&hl=bn
If you or the advertising agency you're working with would like to use Display & Video 360 or Campaign Manager 360 to track in-app events measured in Firebase...
campaign managerdisplayvideofirebase