Stockinette is where you knit one row, purl one row. For a border, you either want to knit every row (garter stitch) and then work the first few stitches in garter with the section between in stockinette.
You can also do a border in seed stitch with a few rows of that and a few stitches on each edge in seed stitch with the stockinette in between.
"Trust the pattern!"
Time flies like an arrow, but fruit flies like a banana.
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IngridKH on Ravelry