google-style.css

@namespace url(http://www.w3.org/1999/xhtml);

@-moz-document
    domain("google.com"),
    domain("google.co.jp")
{
/* To hide profile photo */
#gbi4i, #gbmpi, .a-c-T,
.a-b-Rf-Lz, .a-f-VitKP,
.a-f-i-q {
    display:none !important;
}

/* top-bar common part */
#gb {
    position:fixed;
    width:100%;
}

/* top-bar Google+ part */
.a-U-T { padding-top:30px; }

/* top-bar Search part */
#subform_ctrl { margin-top: 30px !important; }
#gbx3, #gbx4 { opacity:0.5 !important; }

/* top-bar Reader part */
#top-bar { margin-top:40px !important; }

/* top-bar Gmail part */
body.cP div:nth-child(1) .nH:nth-child(1)
.nH:nth-child(1) .no:nth-child(1) {
    margin-top:30px;
}

/* top-bar Account part */
.Sa-E-U-T { padding-top: 30px; }
}

あと、職場とかでプロフ画像隠したい！って人でなければ To hide profile photo の部分はいらないです