Americans might be noticing markdowns for some everyday essentials during their weekly grocery runs. That doesn’t mean the battle against inflation is won. Walmart saw first-quarter sales at stores open at least a year climb 3.8% from the prior year, in part thanks to its ability to keep prices low even as inflation remains sticky. The largest retailer in the United States has been a mainstay for cash-strapped consumers shopping for deals on groceries and other merchandise.