Question about nesting css selectors syntax

[nelsonm]

hi all,

when nesting css selectors, which of the following is the proper syntax...

are no spaces between nested selectors valid

div.class3, #id1#id2, .class1#id3, #id4.class2 {}

or does there always have to be a space between nested selectors...

div .class3, .class4 div, #id1 #id2, .class1 #id3, #id4 .class2 {}

[lucy24]

div.class3
div .class3

mean different things. The first is

<div class = "class3">
blahblah
</div>

The second is

<div-of-any-kind>
<anything class = "class3">
blahblah
</anything>
</div>

[ergophobe]

A space indicates that it is part of the cascade; no space does not

div.class3 refers to a div tag with a class attribute of "class3"

div .class3 should refer to a div tag that has a child of class3 and might be the same as, for example, div.class1 p.class3

[nelsonm]

Ok thanks.