My 'home button' has a margin, why is this?

HTML & CSS
1

Hello

I don’t understand why my home button has a thin margin box?
http://coder9.com/pcr/

How do i remove it?

and when i click that button the border highlight, how do i remove this also?

css codes:


/* public styles */
body {
	padding: 0px;
	margin: 0px;
	background:url(images/background.jpg);
	background-color:#2ABDEB;
	color: #050707;
	text-align: center;
    font:Arial, Helvetica, sans-serif;
}

p { padding:0px; margin:0px; }

input, select {
	font-size: 12px;
	font:Arial, Helvetica, sans-serif;
}

div#container {
	background-color:#FFFFFF;
	width:800px !important;
	margin: 0 auto; 
	text-align:left;
}

div#center { width: 800px; }

div#header {
	background:url(images/platebackground.jpg);
	background-color:#0F73A5;
	width: 800px;
	height:450px;
}

div#headercalendar{
	background:url(images/calendar-banner.jpg);
	float:left;
	margin: 10px 0px 0px 25px;
	width: 750px;
	height: 404px;
	z-index: 1;
}

div#button-live-chat{
	background-color:red;
	position: absolute;
	margin: 25px 0px 0px 620px;
	width: 100px;
	height: 30px;
	z-index: 2;
}

div#button-cash-back{
	background-color:red;
	position: absolute;
	margin: 295px 0px 0px 605px;
	width: 120px;
	height: 30px;
	z-index: 2;
}

div#button-home{
	background-color:none;
	position: absolute;
	margin: 346px 0px 0px 525px;
	width: 170px;
	height: 50px;
	z-index: 2;
}



div#body-middle {
	background:url(images/platebackground.jpg);
	width:800px;
	float:left;
	height:1000px;
	background-color:#64BEF0;
}


div#body-content{
	background-image:url(images/ticketntshirt.png);
	background-repeat:no-repeat;
	margin: 10px 0px 0px 25px;	
	width:446px;
	height:auto;
	float:left;
	font-family:Georgia, "Times New Roman", Times, serif;
	font-size:14px;
	color:#00397F;
}

div#letter-from-vip{
	background:url(images/letter-from-the-vip-manager.jpg);
	background-repeat:no-repeat;	
	float:left;
	width: 600px;
	height: 404px;
	z-index: 1;
}

div#letter-from-vip-content{
	background-color:white;
	position: absolute;
	margin: 70px 0px 0px 0px;
	width: 600px;
	height: auto;
	z-index: 2;
}


div#content { 
	background-color:#FFFFFF;
	width:800px;
	height:auto;
	float:left;
}

div#footer {
	background:url(images/platebackground.jpg);
	background-color:#00FF00;
	float:left;
	width:800px;
	padding-top:30px;
	height:70px;
	text-align: center;
	font-size:14px;
	color:#00397F;
	font-family:Georgia, "Times New Roman", Times, serif;
	
}

div#footer a {
	color: #00397F;
	font-weight:bold;
	font-size: 14px;
    font-weight: normal;
	text-decoration: none;

	}
	
div#footer a:hover {
	color: #00397F;
	font-size: 14px;
	font-weight:bolder;
	text-decoration: none;

	}

Thanks in advance.

2

To remove the blue line around it add: a img{border:none} to your .css.

3

@BPartch

thanks man.