How to correctly describe the cs grammar to my syntax?

Question

Parsing

Here is an example of my syntax:

@style default {
    colors{
        baseColor:#00FF00;
        exColor:#00AA00;
    }
    dims{
        blockPadding:5dp
    }
}
@style dark:default {
    colors{
        baseColor:#0000FF;
    }

}

block {
    color:@colors.baseColor;
    padding:@dims.blockPadding;
}

newblock:block{
    width:100%;
    height:100%;
    padding:@colors.exColor;
}

Here is what I was able to put together (EBNF):

<style>  ::= "@style" " " <word> <block>
<extend> ::= <word> ":" <word> 
<class>  ::= (<word> | <extend>) <block>
<block>  ::= "{" <assign>* "}"
<number> ::= <digit> | <number> <digit>

<assign> ::= <word> ":" <word> ";"
<word>	 ::= <symb> | <word> <symb>
<symb>   ::= ([0-9] | [a-z])+ 
<digit>  ::=  [0-9]

Have I described everything correctly? Do you need to fix something?

Answer 1

Not right. If you go through your grammar according to the example, then almost all lines will have errors.