body {
    background-image: url('../images/bg_header_concept.png');
}

.navbar-nav a {
    color: #333;
}

.navbar-nav a.active {
    color: #40b8d8;
}

.navbar-toggle .icon-bar {
    background-color: #333;
}

.navbar-nav a.regButton {
    border-color: #e43b3b;
    color: #e43b3b;
}

.concept {
    text-align: center;
}

.concept h1 {
    padding-top: 110px;
    color: #333;
    font-size: 36px;
	font-weight: 100;
    line-height: 60px;
}

.feature {
    width: 70%;
    height: 100px;
    margin: 75px auto 0 auto;
    -webkit-box-shadow: 0 0 20px rgba(236, 238, 240, .7);
    -moz-box-shadow: 0 0 20px rgba(236, 238, 240, .7);
    box-shadow: 0 0 20px rgba(236, 238, 240, .7);
    border-radius: 10px;
    background-color: #fff;
}

.feature>div>div {
    color: #a7afb8;
    font-size: 16px;
    line-height: 100px;
    vertical-align: middle;
}

.introduce {
    width: 70%;
	margin: 100px auto;
    color: #a7afb8;
	font-size: 16px;
}

.introduce p {
	margin-top: 30px;
}

.introduce p.firstP {
	margin-top: 0;
}

.introduce h2 {
    color: #333;
	font-size: 24px;
}

footer {
    border-top: 1px solid #f0f2f5;
}

@media screen and (max-width: 1023px) {
	.feature {
		width: 90%;
	}
	.introduce {
		width: 90%;
	}
	.introduce h2 {
		font-size: 20px;
	}
}

@media screen and (max-width: 767px) {
	.navbar-nav {
		margin: 0 -15px;
	}
	.concept h1 span {
		display: block;
		line-height: 48px;
	}
	.concept h1 {
		padding-top: 70px;
		font-size: 28px;
		line-height: 16px;
	}
	.feature {
		width: 80%;
		height: 180px;
		margin-top: 70px;
	}
	.feature>div>div {
		line-height: 60px;
	}
	.introduce {
		width: 80%;
		margin: 70px auto;
	}
	.introduce p {
		text-align: center;
	}
	.introduce p.firstP {
		margin-top: 70px;
	}
	.introduce h2 {
		font-size: 20px;
		text-align: center;
	}
}