header{
	background-color:  #f6f6f6;
	height: 4px;
	width: 100%;
	display: flex;
}

body{
	font-size: 16px;
}

.navbar-brand{
	background-image: url('./imgs/logo.png');
    height: 48px;
    width: 48px;
    background-position: center;
    background-size: 100% 100%;
    border-radius: 5px;
    margin-right: 8px;
}

.navbar
{

	height: 64px;
	padding: 8px;
}

.navbar-brand-text
{
	line-height: 48px;width:10em;font-weight: bold;
}

.nav > li > a{
	color: #333333;
	font-size: 16px;
}


.core
{
	margin-top: -20px;
	display: flex;
	width: 100%;
	height: 350px;
	display: flex;
	flex-direction: column;
	background-color: #9966bb;
	color:  white;
	
	justify-items: center;
    text-align: center;
    padding-top: 20px;
}

.core > div {
	margin-top: 1em;
	font-size: 2em;
	/*line-height: 1.5em;*/
	/*padding-top: 40px;*/
}

.feature
{
	/*height: 400px;*/
	/*background-color: rgb(245, 245, 245);*/
	display: flex;
	flex-direction: row;
	justify-content: space-around;
	padding: 20px;
	margin: 40px auto;
	flex-wrap: wrap;
}


.feature > .item{
	display: flex;
	flex-direction: column;
	align-items: center;
	flex: 1;
	padding: 0 10px;
}

.feature > .item > img{
	padding: 60px;
	width: 80%;

}

.feature > .item  h4{
	color:  #333;
	font-weight: bold;
	font-size: 1.3em;
	text-align: center;
}

.feature > .item  p{
	color:  #666;
	text-font: 1.2em;
	text-indent: 2em;

}

.feature .bigicon {
	color: #9966bb;
	font-size: 5em;
	padding: 0.5em;
}

.feature p 
{
	text-align: center;
}


/*证书相关*/
.cert
{
	/*height: 400px;*/
	/*background-color: rgb(245, 245, 245);*/
	display: flex;
	flex-direction: row;
	justify-content: space-around;
	padding: 20px;
	margin: 40px auto;
	margin-bottom: 100px;
	flex-wrap: wrap;
}


.cert > .item{
	display: flex;
	flex-direction: column;
	align-items: center;
	flex: 1;
	padding: 0 10px;
}

#certs h4
{
	text-align: center;
}



footer{
	height: 450px;
	background-color:  #9966bb;
	color: white;
	font-size: 1em;
	padding-top: 2em;
}

.footer-text
{
	font-size: 0.8em;
	color: white;
	line-height: 2em;
}

.footer-text:hover
{
	
	color: white;
	
}

.footer-title
{
	font-size: 1em;
	color: white;
	line-height: 2em;
	font-weight: bold;
}

.footer-title:hover
{
	color: white;
}

.text-center
{
	text-align: center;
}
.my-btn
{
	font-weight: bold;
	font-size: 0.7em;
    padding: 0.5em 1em;

}


.col{
	display: flex;
	flex-direction: column;
	padding: 10px 40px;
}