why border : 0 4px double #000; not working

I want this
border-top : 0;
border-left : 4px double #000;
border-right : 4px double #000;
border-bottom : 0;

I have succeeded slightly differently before with,
border : 2px solid #000; but that gives a border all the way around.
How do I get a border on only, the left and right with the smallest anount of CSS?

Bazz

I usually declare everything but the width, then the width, like so:

whatever {
border: double #000;
border-width: 0 4px;
}

There are a couple of options, but the following two properties ought to work nicely:
border: 4px #000;
border-style: none double;
the first sets all borders to 4px black, but no style; the second adds the style for top and bottom to none (no border) and double for left and right.

That's great guys thanks.

Bazz :thumbsup: