www.bbc.co.uk/news/business-64290160
Inflation is a measure of how fast prices are rising. So if it's positive, prices are still rising. Just the rate of that increase is "slowing down".
However, if this needs to be explained, then maybe politicians who say that they are going to reduce the level of inflation are going to be worried when people don't see prices falling.
(although it does seem that the fall in the price of fuel over the last few months has helped bring inflation down, as the overall cost in the rise of the basket of goods has slowed down).