You can force the mobile view in a desktop browser by adding the mobile delivery channel to the end of the URL. The mobile delivery channel is:

?Deliverychannelid=3f6b7ea0-73e8-462b-a075-de89431816a4

For example: www.domain.org/donate?Deliverychannelid=3f6b7ea0-73e8-462b-a075-de89431816a4