CSS: select Elements with no class/no ID

by Fiddel

HTML

<div class="test1">
class
</div>
<div class="test2">
class
</div>
<div class="test3">
class
</div>
<div class="test4">
class
</div>
<div class="test5">
class
</div>
<div class="test6">
class
</div>
<div id="Test">
ID
</div>
<div>
no class + no ID
</div>
<div class="test7">
class
</div>

CSS

div:not([class]) {
  border:1px solid red;
}
div:not([class]):not([id]) {
  border:1px solid lime;
}