css.next.css

/* More pseudo classes */
input:disabled  { ... }
input:invalid   { ... }

/* Matches-Any Pseudo-class */
:matches( h1, h2 ) > p { ... }
:matches( h1, h2 ) > :matches( p, span ) { ... }

/* subject selector */
$ul > li.important:hover {...}
$p + p { ... }

/* scoped style */
<div>
  <div> /* --------------------------- */
    <style scoped>
      div { border: 1px solid red; }
     </style>
    <div>foo</div>
  </div> /* -------------------------- */
</div>