So I currently have a margin left and right of 40px on my app. If i have an image that is 100% of the width it will not be 100vw but 100vw - 40px. Since percentages aren't allowed in the sizes prop of an image i need to set the image to slightly less than 100vw. I've googled a bit and i cannot find anything about calc being supported (or not being supported) in the sizes prop. Would i be able to do

sizes='calc(100vw-80px)'

?
Thanks in advance