Retailers log $7.9 billion in online sales in first 24 hours of Prime Day

1. U.S. online sales rose 9.9% to $7.9 billion at Prime Day kickoff. 2. Amazon's Prime Day is seeing strong demand in home and outdoor goods. 3. Early results are softer than last year's but it's too early to judge. 4. Adobe predicts total sales of $23.8 billion during the Prime Day event. 5. Economic uncertainty and tariffs remain concerns for consumers and retailers.