CSS CLAMP vs Consultas de mídia

<article>
  Lorem ipsum ...
</article>

/* Using clamp -------------------------- */
article {
  width: clamp(200px, 50%, 800px);
}


/* Using media queries ------------------ */
/* Default */
article {
  width: 50%;
}

/* Small screens */
@media only screen and (max-width: 600px) {
  article {
    width: 200px;
  }
}

/* Large screens */
@media only screen and (min-width: 1200px) {
  article {
    width: 800px;
  }
}
Syntax Error