body {text-align:center; margin:0px; border:0px; background-color:#FD8181;}
<!--
div {width:100%; text-align:-moz-center; margin-right:auto; margin-left:auto; border:0;}
-->
p {font-family:arial, verdana, helvetica, sans-serif; font-size:15px; padding:10px; text-align:justify; margin-left:20px; margin-right:20px; margin-top:0px; margin-bottom:0px;}
li {font-family:arial, verdana, helvetica, sans-serif; font-size:15px; text-align:justify; margin-left:20px; margin-right:20px; margin-top:0px; margin-bottom:0px;}
h1 {text-align:center; font-size:22px;}
h2 {text-align:center; font-size:18px;}
h3 {text-align:left; font-size:18px; margin-left:20px; margin-right:20px; margin-top:0px; margin-bottom:0px;}
h6 {width:100%; text-align:center; font-size:10px;}
td {font-family:arial, verdana, helvetica, sans-serif; font-size:15px; text-align:justify;}
.iimg {margin-left:20px; margin-right:20px;}

table {width:800px; margin-right:auto; margin-left:auto; border:0;}
.tab1open {width:100px; height:40px; margin-top:15px; text-align:center; font-size:16px; font-weight:bold; background-image:url('image_files/tab1open.gif');}
.tab1shut {width:100px; height:40px; margin-top:15px; text-align:center; font-size:16px; font-weight:bold; background-image:url('image_files/tab1shut.gif');}
.tabshut  {width:100px; height:40px; margin-top:15px; text-align:center; font-size:16px; font-weight:bold; background-image:url('image_files/tabshut.gif');}
.tabopen  {width:100px; height:40px; margin-top:15px; text-align:center; font-size:16px; font-weight:bold; background-image:url('image_files/tabopen.gif');}
.tabnext  {width:100px; height:40px; margin-top:15px; text-align:center; font-size:16px; font-weight:bold; background-image:url('image_files/tabnext.gif');}
.tablink  {text-decoration:none;}