title: CSS nth-child 1-6, 7-12, etc
body: <p>I'm attempting at styling children items as follows</p>
  
  <p>1,7,13,etc</p>
  
  <p>2,8,14,etc</p>
  
  <p>3,9,15,etc</p>
  
  <p>4,10,16,etc</p>
  
  <p>5,11,17,etc</p>
  
  <p>6,12,18,etc</p>
  
  <p>What nth-child syntax can I use to achieve this?</p>