cundo pongo el Font weight no canbia

<article>
  <p>Hola <span>Mundo</span></p>
</article>

:root{
  --regular: 400;
}
body{
  font-size:1em;
  ont-family:Verdana, Arial, sans-serif;
  font-family:"Times New Roman",Georgia,serif;
}

article{
  font-size:3em;
  font-weight:var(--regular);
}
span{
  font-size:1rem;
}

cundo pongo el Font weight no canbia

<article>
  <p>Hola <span>Mundo</span></p>
</article>

:root{
  --regular: 400;
}
body{
  font-size:1em;
  ont-family:Verdana, Arial, sans-serif;
  font-family:"Times New Roman",Georgia,serif;
}

article{
  font-size:3em;
  font-weight:var(--regular);
}
span{
  font-size:1rem;
}

cundo pongo el Font weight no canbia

<article>
  <p>Hola <span>Mundo</span></p>
</article>

:root{
  --regular: 400;
}
body{
  font-size:1em;
  ont-family:Verdana, Arial, sans-serif;
  font-family:"Times New Roman",Georgia,serif;
}

article{
  font-size:3em;
  font-weight:var(--regular);
}
span{
  font-size:1rem;
}