<div id='n1'> Element n1</div>

<div id='n223'> Element n223</div>

<div id='n3z'> Element n3</div>

<div id='n12' name='n12'> Element n12</div>

<div id='n23' class='NoRegMatch'> Element n23</div> 

div[id='n1'] {
  color:red;
}

div[id*='22'] {
  color:green;
}

div[id$='z'] {
  color:blue;
}
div[name] {
  background:gray;
}