image-size

Note: it is invalid to provide percentages directly as <img> width or height attribute unless you’re using HTML 4.01 (see current spec, obsolete spec and this answer for more details). That being said, browsers will often tolerate such behaviour to support backwards-compatibility. Those percentage widths in your 2nd example are actually applying to the container your <img> is in, and not the image’s actual size. Say you … Read more