CSS颜色渐变

此为黑色到白色的渐变（自行改变颜色适应需求）

.gradient{    background: #000000;    background: -moz-linear-gradient(top,  #000000 0%, #ffffff 100%);    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#000000), color-stop(100%,#ffffff));    background: -webkit-linear-gradient(top,  #000000 0%,#ffffff 100%);    background: -o-linear-gradient(top,  #000000 0%,#ffffff 100%);    background: -ms-linear-gradient(top,  #000000 0%,#ffffff 100%);    background: linear-gradient(to bottom,  #000000 0%,#ffffff 100%);    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#000000', endColorstr='#ffffff',GradientType=0 );/*ie 6 7 8*/}:root .gradient{filter:none;}/*for ie*/