I know that all browsers support bold and normal, but I have not been able to find a full support for CSS font -The latest browser list for the value of the weight attribute. The only information I found is Font-weight is still broken. It shows that most browsers at the time could not render the digital weight correctly, but it was before the release of IE8 in 2009.
Example:
You can view the specification to explain when the font does not exist Browser behavior when weighting: http://www.w3.org/TR/CSS21/fonts.html#font-boldness
Hope this can help
When will we fully support adding digital font weights to each browser? Specifically: IE, FireFox, Chrome, Safari, iOS Safari, Android browsers.
I know that all browsers support bold and normal, but I have not been able to find a full support for CSS font -The latest browser list for the value of the weight attribute. The only information I found is Font-weight is still broken. It shows that most browsers at the time could not render the digital weight correctly, but it was before the release of IE8 in 2009.
Example:
AFAIK,font The value of -weight is because every browser supports font-weight…so all the nuances of weight (all those number-level ghosts) depend on the font itself (from the user’s machine, or you have added via @font-face If the font does not have “semibold”, 500 will not do anything.
You can check the specification to explain the behavior of the browser when the font does not have weight: http://www .w3.org/TR/CSS21/fonts.html#font-boldness
Hope this helps