CSS background 渐变

html { margin:0; padding:0; height:100%;
  background: url(http://p1.qhimg.com/d/360browser/20130709/backbg.jpg) repeat-x; /* Old browsers */
  background: -moz-linear-gradient(top,  #5f9dde 0%, #c1e4ff 100%); /* FF3.6+ */
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#5f9dde), color-stop(100%,#c1e4ff)); /* Chrome,Safari4+ */
  background: -webkit-linear-gradient(top,  #5f9dde 0%,#c1e4ff 100%); /* Chrome10+,Safari5.1+ */
  background: -o-linear-gradient(top,  #5f9dde 0%,#c1e4ff 100%); /* Opera 11.10+ */
  background: -ms-linear-gradient(top,  #5f9dde 0%,#c1e4ff 100%); /* IE10+ */
  background: linear-gradient(to bottom,  #5f9dde 0%,#c1e4ff 100%); /* W3C */
  filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#5f9dde', endColorstr='#c1e4ff',GradientType=0 ); /* IE6-9 */
}
@media screen and (max-height: 760px) {
  html {
    background: url(http://p1.qhimg.com/d/360browser/20130709/backbg.jpg) repeat-x; /* Old browsers */
    background: -moz-linear-gradient(top,  #5f9dde 0%, #a1cdf3 100%); /* FF3.6+ */
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#5f9dde), color-stop(100%,#a1cdf3)); /* Chrome,Safari4+ */
    background: -webkit-linear-gradient(top,  #5f9dde 0%,#a1cdf3 100%); /* Chrome10+,Safari5.1+ */
    background: -o-linear-gradient(top,  #5f9dde 0%,#a1cdf3 100%); /* Opera 11.10+ */
    background: -ms-linear-gradient(top,  #5f9dde 0%,#a1cdf3 100%); /* IE10+ */
    background: linear-gradient(to bottom,  #5f9dde 0%,#a1cdf3 100%); /* W3C */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#5f9dde', endColorstr='#a1cdf3',GradientType=0 ); /* IE6-9 */
  }
}

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