HTML Font Weight
which means that an
You can also use the words "normal" (the same as 400), "bold" (same as 700), "bolder" (a relative statement meaning to make the text bolder than the surrounding element), or "lighter" (make the text lighter than the surrounding element). Because few fonts have nine shades of boldness, in most fonts 100 to 500 are the same, 600 to 800 are the same, and 900 is boldest. One of the ramifications of this is that although "normal" is 400, 100 is not really any lighter. there is no practical way to present text with less-than-normal weight.