[Beta] Incorrect font weight

This is the current font weight of paragraphs in the beta docs

The computed styles have a font weight of 400 but it is actually 500 because there is no font face for the regular font. there is only a font face for the font of weight 500 and this can be found in index.css that only has the following font faces:

@font-face {
    font-family: 'Source Code Pro';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('/fonts/Source-Code-Pro-Regular.woff2') format('woff2');
  }

  @font-face {
    font-family: 'Optimistic Display';
    src: url('https://beta.reactjs.org/fonts/Optimistic_Display_W_Lt.woff2')
      format('woff2');
    font-weight: 300;
    font-style: normal;
    font-display: swap;
  }

  @font-face {
    font-family: 'Optimistic Display';
    src: url('https://beta.reactjs.org/fonts/Optimistic_Display_W_Md.woff2')
      format('woff2');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
  }

  @font-face {
    font-family: 'Optimistic Display';
    src: url('https://beta.reactjs.org/fonts/Optimistic_Display_W_Bd.woff2')
      format('woff2');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
  }

The solution would be to add a font face for the regular font because the current font weight for the paragraphs is a bit unreadable.

Comienza en index.css e inspecciona las declaraciones @font-face de Optimistic Display que se muestran en el issue. Añade la fuente regular que falta y, después, verifica que los párrafos de la documentación beta usen el peso regular previsto y sean más legibles en el navegador.