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#main tr { border:none; } 

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#main table {width:750px;
border:3px solid #08f;
padding:0;
border-spacing:none;
margin: auto; }

#main tr { border:none; } 

#main th {height: 50px;
border:none;
font-family: Palatino Linotype, Arial;
font-weight:normal;
font-size:medium;
color:#fff;
background-color:#C0C0C0;
background: url(../pics/hinter_bg2.jpg) 95% 50% no-repeat;
margin:3px 0;
padding: 0 10px;
border-spacing:0px;}

#main td {width: 100%;
border:none;
border-spacing:none;
background-color:#FFFF80;
margin:3px 0;
padding: 0 10px;}

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  <div id="main">
  <table>