# Style utilities CSS reference Every CSS property the style utilities write, looked up by the property. Source: https://www.zazz.sh/docs/concepts/utilities-reference/ Utilities are mostly named after Tailwind's classes, so `align-items` is `--items`; `border-radius` is `--radius`. If you know the property and not the class, find it here. Physical names (`width`, `padding-left`) are listed too: the kit writes the logical property, so `--pl` pads the inline start, which is the right side in a right-to-left document. A value is written the way the property takes it (`--justify: space-between`, `--w: 100%`). Spacing, margin, sizing, and radius utilities also take a bare number as a step on the spacing scale, and a few utilities take a token by name; the [utilities overview](/api/utilities/) has the value rules.