On Wednesday, May 1, 2013 1:43:06 PM UTC+1, Ruby-Forum.com User wrote:
>
>
> But I am not comfortable with some notation used here,so thought if 
> anyone out there help me to redirect to a resource where I can learn 
> such techniques. 
>
>
You need to read up on css selectors
 

> My hard confusion is with the below lines: 
>
> ***** "#ires ol li" ***** 
>
> - when to write this way? 
> - what `#` stands for? Looking at the source page I saw `ires` is one 
> id. -- when I need to use such `#` and when `.`? 
>

#foo finds an element with id foo whereas .foo finds an element with class 
foo. Which one to use depends on the markup.
 

> - Is there any other operators like `#` and `.` when using css? 
>
>
Yes, there are a whole bunch, such as the pseudo selectors (:not, 
:nth-child), attribute selectors etc.

https://developer.mozilla.org/en-US/docs/CSS/Getting_Started/Selectors

has fairly exhaustive info


Fred 

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