Originariamente inviato da mahagonny.red
per esempio così

codice:
<td style="">#contenitore {     background: -moz-linear-gradient(top, rgba(0,0,0,0) 0%, rgba(0,0,0,0) 54%, rgba(0,0,0,1) 100%); /* FF3.6+ */     background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(0,0,0,0)), color-stop(54%,rgba(0,0,0,0)), color-stop(100%,rgba(0,0,0,1))); /* Chrome,Safari4+ */     background: -webkit-linear-gradient(top, rgba(0,0,0,0) 0%,rgba(0,0,0,0) 54%,rgba(0,0,0,1) 100%); /* Chrome10+,Safari5.1+ */     background: -o-linear-gradient(top, rgba(0,0,0,0) 0%,rgba(0,0,0,0) 54%,rgba(0,0,0,1) 100%); /* Opera 11.10+ */     background: -ms-linear-gradient(top, rgba(0,0,0,0) 0%,rgba(0,0,0,0) 54%,rgba(0,0,0,1) 100%); /* IE10+ */     background: linear-gradient(to bottom, rgba(0,0,0,0) 0%,rgba(0,0,0,0) 54%,rgba(0,0,0,1) 100%); /* W3C */     filter: progid: DXImageTransform.Microsoft.gradient( startColorstr='#00000000', endColorstr='#000000',GradientType=0 ); /* IE6-9 */ }</td>
NO! Dentro a style