CSS3 线性渐变(linear-gradient)
http://www.cnblogs.com/lhb25/archive/2013/01/30/css3-linear-gradient.html
background
: -moz-linear-gradient(
top
,
#ace
,
#f96
);
background
: -webkit-linear-gradient(
top
,
#ace
,
#f96
);
background
: -o-linear-gradient(
top
,
#ace
,
#f96
);
background: linear-gradient(left top,#2a3759,#36275c); /* 标准的语法 */