:nth checker

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Simple check

• Select every third element starting at second if it’s a list item
• Select the third item if it’s a list item
• Select the the first four elements if they are list items
• Select the second to last element if it is a list item
• Select the first appearing div
• Select the last appearing div
• Select odd list items
• Select every fifth list item starting at first
• Select all but the first 6 list items

Note

The <div> and <ins> elements in the code tree on the right don’t show their closing tags (for visual simplicity), but they are actually there!