Multiple style attributes in a span tag what s supposed to happen

Question

Consider the following HTML fragment with two style attributes    lt span style  color blue  style  font-style italic  gt Test lt  span gt    In Opera 12 16 and Chrome 40  it shows up as blue non-italic text  while Internet Explorer 9 shows blue italic text   What  if anything  does the standard say is supposed to show up

User · Answer

Separate your rules with a semi colon in a single declaration    lt span style  color blue font-style italic  gt Test lt  span gt

User · Answer

In HTML  SGML and XML   1  attributes cannot be repeated  and should only be defined in an element once   So your example    lt span style  color blue  style  font-style italic  gt Test lt  span gt    is non-conformant to the HTML standard  and will result in undefined behaviour  which explains why different browsers are rendering it differently     Since there is no defined way to interpret this  browsers can interpret it however they want and merge them  or ignore them as they wish    1   Every article I can find states that attributes are  key value  pairs or  attribute-value  pairs  heavily implying the keys must be unique  The best source I can find states      Attribute names  id and status in this example  are subject to the same restrictions as other names in XML  they need not be unique across the whole DTD  however  but only within the list of attributes for a given element   Emphasis mine

[html] Multiple "style" attributes in a "span" tag: what's supposed to happen?

Examples related to html