v149 · CSS · Gap Decorations
Rule Builder
Dial in your gap decoration rules interactively. Pick layout type, adjust column-rule and row-rule properties — the live preview updates and the CSS output copies to clipboard.
Layout
Gap
1.5rem
column-rule
1px
alternate every second column separator
row-rule
0px
Preview
Generated CSS
see also
implementation reference
Need the exact API surface, compatibility boundaries, errors, lifecycle, and source links? Read the matching gendn reference ↗