CSS nth-child Tester
Evaluate an-plus-b nth-child formulas against a finite item list.
How CSS nth-child Tester works
CSS nth-child Tester is designed to evaluate an-plus-b nth-child formulas against a finite item list. The parser accepts odd, even, exact positions, and an-plus-b notation, then evaluates nonnegative integer n values against the requested item count. CSS nth-child Tester adds a focused result for this operation. For CSS nth-child Tester, the immediate result links every visible control to a value or preview that can be inspected as the settings change.
The default 2n+1 formula selects items 1, 3, 5, and 7 from a list of eight. Use it to verify zebra patterns, repeating card accents, or every-third-item rules before writing selectors into a stylesheet. In CSS nth-child Tester, keeping this example as a reference helps distinguish a control change from an unexpected implementation result.
Limits, output, and privacy
Nth-child counts all element siblings of the same parent; use nth-of-type when unrelated element types should not affect the sequence. For CSS nth-child Tester, browser support and surrounding layout still matter, so the copied rule should be checked in the project and target browsers where it will ship. CSS nth-child Tester keeps the operation client-side. With CSS nth-child Tester, the entered values or selected file remain on this device, and the final action uses only the result already held by the browser.
Frequently Asked Questions
How does the CSS nth-child tester work?
It will evaluate an-plus-b nth-child formulas against a finite item list. The default controls reproduce the worked vector described on the page.
What should I verify before using the result?
For CSS nth-child Tester, browser support and surrounding layout still matter, so the copied rule should be checked in the project and target browsers where it will ship.
Does the CSS nth-child tester upload my input?
No. CSS nth-child Tester performs its calculation, preview, and copy or download action locally in your browser.
Browse the full set of free, private, in-browser tools.