Horizontal scroll bar in Google Chrome

Currently when using the Web UI Chrome constantly has a horizontal scroll bar despite having no content available when scrolling horizontally.

Currently in signet.css line 207 there is:

/* LAYOUT AND POSITIONING */
#Header

{ position: absolute; top: 0px; left: 0px; width: 100%; margin: 6px 6px 0px 6px; float: left; clear:both; /* Again, the ugly brilliant hack. */ voice-family: "\"}

\"";
voice-family:inherit;
}

changing the margin right to be 0px fixes the scroll bar:

margin: 6px 0px 6px 0px;