HTML/CSS Case Sensitivity
Case sensitivity:
- HTML tag names
-
Case insensitive.
<div>
=<Div>
- HTML attribute name
-
Case insensitive.
class=
=Class=
. - HTML attribute values
-
Case sensitive.
class="A"
≠class="a"
. - XML/XHTML tag name
- Case sensitive. Must be lowercase.
- XML/XHTML attribute name
-
Case sensitive.
class=
≠Class=
- XML/XHTML attribute values
-
Case sensitive.
class="A"
≠class="a"
. - CSS selectors for html tag names
-
Case insensitive.
div.x
=Div.x
- CSS selectors for html attribute names
-
Case insensitive.
div[target]
=div[TARget]
- CSS selectors for html attribute values
-
Case sensitive.
div.a
≠div.A