body{
	background-color: #4F42AB;
	padding: 0;
	margin: 0 auto;
	text-align: center;
}

#bg{background-image: url(images/bg.jpg);}

img{
	float:left;
}

#btn{
	opacity: .8;
}
#btn:hover{
	opacity: 1;
}

.middle{
	display: block;
	width: 100%;
	background: #FFF;
	
}
.join{
	background-image: url(images/images/edm2_1_02.jpg);
}
.topic{
	font-size: 24px;
	color: #FFF;
	font-weight: bold;
	font-family: "微軟正黑體", "Arial Narrow";
	line-height: 2;
}
.txt{
	width: 70%;
	margin: auto;
	padding: 2% 2% 30% 2%;
	background-color: #FFF;
	opacity: .9;
	border-radius: 1em;
	font-family: "微軟正黑體", "Arial Narrow";
}
.txt02{
	font-size: 16px;
	color: #666;
	font-family: "微軟正黑體", "Arial Narrow";
	padding-top: 5%;
}