Website Div Question

I have a div that is basically a rectangle with a grey color, and then on top of that I have another div that I have a logo on top of that.  I want to make the first div have transparency so I add that code to the css file and it is making both the rectangle and the logo transparent.  HELP!!!!

here is my code below.

HTML
 <span><div id="box">
   <div id="logo" align="center"><img src="images/logo.png" />
     <span class="family">Loggers is a family owned and operated busincess since 19??.  We Specialize in         Indiana Hardwood Lumber                                   </span>                                        </div>
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CSS
#box {height:470px;
            width:250px;
            background-color:#CCCCCC;
            position:fixed;
            margin-top:0 auto;
            margin-left:100px;
            -ms-filter:“progid:DXImageTransform.Microsoft.Alpha(Opacity=90)”;
  filter: alpha(opacity=80);
  -khtml-opacity: 0.8;
  -webkit-opacity: 0.8;
  -moz-opacity: 0.8;
  opacity:0.8;}