body {
	position: relative;
	padding:0px;
	margin:0px;
}


#box {
	width:100%;
padding-bottom:90px;

}

#btn3 {
	overflow:hidden;
	display:block;
	position: absolute;
	z-index:2;
	bottom:0px;
}


.b1 {
	width:38%;
	float:left;
	margin-bottom:20px;
	margin-left:10%;

}

.b2{
	width:38%;
	float:right;
	margin-bottom:20px;
	margin-right:10%;


}

.b3{
	width:80%;
	display:block;
	margin:20px auto 30px auto;
}

#update {
	color:#555;
	font-size:14px;
	text-align:right;
	margin-right:2em;


}