The main thing I see that stands out different is the background of the links. There s a subtle gradient on the original design, and that s missing from yours. It s also why the borders look different - the gradient is on the color, not the borders, but your eye is tricked.
Add this to the stylesheet:
#header-mania .header {
/* Keep everything *except* the original background */
background: #7fa445;
background: -moz-linear-gradient(top, #7fa445 0%, #6b9632 100%);
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#7fa445), color-stop(100%,#6b9632));
background: -webkit-linear-gradient(top, #7fa445 0%,#6b9632 100%);
background: -o-linear-gradient(top, #7fa445 0%,#6b9632 100%);
background: -ms-linear-gradient(top, #7fa445 0%,#6b9632 100%);
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr= #7fa445 , endColorstr= #6b9632 ,GradientType=0 );
background: linear-gradient(top, #7fa445 0%,#6b9632 100%);
}
这种背景的颜色可能并不准确(我觉得像发射PS仅仅与颜色相匹配),但你可以很容易地利用,最终的CSS Gradient Generation/a>。