body {
	background: #fff;
}
.main .main-title {
	margin-bottom: 30px;
	text-align: center;
}
.main .main-title h2 {
	padding: 20px 0;
	font-size: 36px;
	text-align: center;
	color: #fff;
	text-shadow: 0 0 1px #000,
             	 1px 2px 1px #999,
             	 2px 2px 1px #666;
}
.main .business-field {
	width: 340px;
	margin: 0 auto;
}
.main .business-field .field {
	position: relative;
	float: left;
	margin: 0 15px 15px 0;
	border: 1px solid #21c2f8;
	width: 155px;
	height: 40px;
	line-height: 40px;
    display: block;
	color: #333;
	text-align: center;
}
.main .business-field .field.active,
.main .business-field .field:hover {
    background: #21c2f8;
    color: #fff;
    cursor: pointer;
}
.main .business-field .field .triangle-down {
	display: none;
    position: absolute;
    left: 78px;
    top: 39px;
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid #21c2f8;
}
.main .business-field .field.active .triangle-down {
    display: block;
}
.main .business {
	margin-bottom: 30px;
}
.main .business-content {
    display: none;
    text-align: center;
}
.main .business-content img {
    margin: 0 auto;
}
.main .business-content.active {
    display: block;
}