Due to inconsistency of CSS3 implementation across different web browser, I wish to leave some note on Gradient and Transparency.
Transparency
background: rgba(0,0,0,0.3);
background:transparent;
filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#50000000,endColorstr=#50000000);
Gradient
background: -moz-linear-gradient(rgba(255,131,126,1) 0%, (255,131,126,0) 95%;
background: -webkit-gradient(linear, left top, left bottom,
from(rgba(255,131,126,1)),to(rgba(255,131,126,0)));
background:transparent;
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#FFFF837E, endColorstr=#00FF837E);