http://jsfiddle.net/8Q79p/古い JSFIDDLE。(ラッパー)
http://jsfiddle.net/8Q79p/1/更新。1つの要素だけが必要な場合は、使用できますcolor-stop
<div id="gradient">
</div>
#gradient{
background: rgb(221,221,221); /* Old browsers */
background: -moz-linear-gradient(top, rgba(221,221,221,1) 1%, rgba(255,255,255,1) 46%, rgba(149,149,149,1) 47%, rgba(149,149,149,1) 48%, rgba(255,255,255,1) 49%, rgba(252,252,252,1) 100%, rgba(27,27,27,1) 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(1%,rgba(221,221,221,1)), color-stop(46%,rgba(255,255,255,1)), color-stop(47%,rgba(149,149,149,1)), color-stop(48%,rgba(149,149,149,1)), color-stop(49%,rgba(255,255,255,1)), color-stop(100%,rgba(252,252,252,1)), color-stop(100%,rgba(27,27,27,1))); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, rgba(221,221,221,1) 1%,rgba(255,255,255,1) 46%,rgba(149,149,149,1) 47%,rgba(149,149,149,1) 48%,rgba(255,255,255,1) 49%,rgba(252,252,252,1) 100%,rgba(27,27,27,1) 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, rgba(221,221,221,1) 1%,rgba(255,255,255,1) 46%,rgba(149,149,149,1) 47%,rgba(149,149,149,1) 48%,rgba(255,255,255,1) 49%,rgba(252,252,252,1) 100%,rgba(27,27,27,1) 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, rgba(221,221,221,1) 1%,rgba(255,255,255,1) 46%,rgba(149,149,149,1) 47%,rgba(149,149,149,1) 48%,rgba(255,255,255,1) 49%,rgba(252,252,252,1) 100%,rgba(27,27,27,1) 100%); /* IE10+ */
background: linear-gradient(to bottom, rgba(221,221,221,1) 1%,rgba(255,255,255,1) 46%,rgba(149,149,149,1) 47%,rgba(149,149,149,1) 48%,rgba(255,255,255,1) 49%,rgba(252,252,252,1) 100%,rgba(27,27,27,1) 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#dddddd', endColorstr='#1b1b1b',GradientType=0 ); /* IE6-9 */
width: 100%;
height: 100px;
border: solid 1px black;
}