cannot eliminate space between 2 horizontal divs inside containing div

Question

Should be easy, right? Just set the outer containing div's padding to zero, and set the two side-by-side divs inside the outer div to have margin:0 but that's having no effect on the space between the 2 horizontal divs. What I need is the red-outlined left div to touch the green-outlined right-side div.

Despite my effort using padding and margin, the space between the 2 divs will not go away.

I have looked at many answers on SO but so far no one's broken it down to this simple example -- my fiddle shows this issue, at

http://jsfiddle.net/Shomer/tLZrm/7/

And here is the very simple code:

<div style="border: 4px solid blue; white-space:nowrap; margin:0; padding:0; width:80%">

   <div style="display:inline-block; width:45%; overflow:hidden; margin:0; border: 1px solid red"> Flimmy-flammy
    </div>

    <div style="display:inline-block; width:50%; overflow:hidden; margin:0px; border: 1px solid green"> Hambone-Sammy
    </div>

</div>

Answer 1

The space rendered between your divs is the whitespace (represented as dots), collapsed, in:

    </div>.  
.................  
....<div>

Instead, try coding like this:

    </div><div>

and the gap will vanish.

Answer 2

Use the float property.

Example with div { float: left; } : http://jsfiddle.net/tLZrm/10/.