from bs4 import BeautifulSoup as bs4

def html(tokens, villur):
    soup = bs4(features="html.parser")
    html = soup.new_tag("html")
    body = soup.new_tag("body", style="margin: 2rem;")
    html.append(body)
    # Fyrirsögn
    texti_tag = soup.new_tag("h1")
    texti_tag.string = "Tilreiddur texti (villur merktar með rauðu):"
    body.append(texti_tag)
    # ítrum í gegnum tokenin og merkjum villur með rauðu
    for t in tokens:
        venjulegur_style = "font-size: 1.5rem; font-weight: bold;"
        villu_style = venjulegur_style + "color: red;"
        if t not in villur:
            tag = soup.new_tag("span", style=venjulegur_style)
        else:
            tag = soup.new_tag("span", style=villu_style)
        tag.string = t
        body.append(tag)
    # skilum fallegum html texta
    return html.prettify()