css3 背景线性渐变

background-image:

-moz-linear-gradient(top , #45B5DA, #0382AD);

background-image:-webkit-gradient(linear, 50% 0%, 50% 100%, from(#45B5DA), to(#0382AD));

background-image:-o-linear-gradient(top , #45B5DA, #0382AD);}