There are no rules in this stylesheet

I am getting this "There are no rules in this stylesheet "

<html>
<link href="../input/styles/emxMCCUI.css" type="text/css" rel="stylesheet">
<body>
<div id="1" >

</div>
<div id="2">
</div>

<div id="3">

</div>
<div id="4">

</div>
</body>
</html>

and here CSS file

div#1{
width: 500px; background: red; padding: 10px;
height: 50%;
}

div#2{
width: 500px; background: gray; padding: 10px;
}

div#3{
width: 500px; background: green; padding: 10px;
height: 50%;

}

when i click on that link it takes me to CSS file still i am getting this error ,whats wrong in that

Browser will issue no such errors. Where is this error coming from? If it's from an IDE, it's an IDE problem.

Yes i am using eclipse ..
do we need to clear cache ,browser setting if we modify .css file

Moved here, to the IDE forum. It might help to be really specific about your Eclipse version and any plugins you might have installed.