#back{
background: -moz-radial-gradient(center, ellipse cover,  rgba(252,252,252,0.65) 0%, rgba(126,126,126,1) 50%, rgba(0,0,0,1) 100%); /* FF3.6+ */
background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%,rgba(252,252,252,0.65)), color-stop(50%,rgba(126,126,126,1)), color-stop(100%,rgba(0,0,0,1))); /* Chrome,Safari4+ */
background: -webkit-radial-gradient(center, ellipse cover,  rgba(252,252,252,0.65) 0%,rgba(126,126,126,1) 50%,rgba(0,0,0,1) 100%); /* Chrome10+,Safari5.1+ */
background: -o-radial-gradient(center, ellipse cover,  rgba(252,252,252,0.65) 0%,rgba(126,126,126,1) 50%,rgba(0,0,0,1) 100%); /* Opera 12+ */
background: -ms-radial-gradient(center, ellipse cover,  rgba(252,252,252,0.65) 0%,rgba(126,126,126,1) 50%,rgba(0,0,0,1) 100%); /* IE10+ */
background: radial-gradient(ellipse at center,  rgba(252,252,252,0.65) 0%,rgba(126,126,126,1) 50%,rgba(0,0,0,1) 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#a6fcfcfc', endColorstr='#000000',GradientType=1 ); /* IE6-9 fallback on horizontal gradient */

}
#line{
background-image:url('under.png');
background-repeat:repeat-x;
}
#csstabs {
  background:#fdfdfd;
  margin:auto;
  width: 800;
  height: 600;
  font-family: arial;
  behavior: url(PIE.htc);
}
#img{
height:3%;
}