Removing Top Margins

I am using Attitude theme for my site pangaria.com

There are two problems that I see
1. There is a margin right on top (with grey background). This is 28px and none of the helps mentioned on forum are helping me in removing that.

2. Above the header logo, there is a white space which again I am not able to remove. Have used the code as suggested by someone on the forum, but it does not work.

.hgroup-wrap {
    padding-bottom: 0px;
    padding-top: 0px;
}

Any help on this would be much appreciated.