body{
    font-family: 'Microsoft YaHei', sans-serif;
}
/*导航*/
.navbar{margin-bottom: 0;border-bottom: 1px solid #e6e6e6;}
.navbar-default{
    background-color: #fff;
    /* box-shadow: 0px 2px 8px 0px rgba(50,50,50,0.25); */
}
.navbar-default .navbar-brand {
    font-size: 30px;
    font-weight: bold;
    color: #38f;
    height: 70px;
    line-height: 35px;padding:0;
}
.navbar-default .navbar-nav>li>a {
    font-size: 16px;
    color: #444;
    height: 70px;
    line-height: 50px;
}
.navbar-default .navbar-nav>li>a:hover{color: #38f;}
.navbar-toggle{
    margin-top: 17px;
}

.banner{text-align:center;color: #fff;background:url(../images/banner.jpg);background-size:100% 100%;}

#slogan h1 {
    font-size: 40px;
}

#bootstrap{
    background: #f8f8f8;
}
#html5 , #bootstrap{
    padding: 80px 0;
}
#html5 h2 , #bootstrap h2 , #bootstrap2 h2{
    font-weight: bold;
}
#html5 p , #bootstrap p , #bootstrap2 p{
    font-size: 16px;
}
.introduceH3{
    margin-top: 20px;
    font-weight: bold;
}
#html5 p  , #bootstrap p{
    line-height: 25px;
}

#getSoftware{
    margin-top: 20px;
    text-align: center;
}

#getSoftware .btn {
    background: linear-gradient(135deg, #9d08f8, #144ff5);
    border: none;
    color: white;
    background-size: 200% auto;
    transition: all 0.3s ease;
}

#getSoftware .btn:hover {
    background-position: right center;
}

/*course*/
#course{
    padding: 80px 0;
    text-align: center;
}
#course h2{
    font-weight: bold;
    padding-bottom: 60px;
}
#course .col-md-3{
    margin-bottom: 20px;
}
.course {
    background: #ffffff;
    border: 1px solid #eee;
}

.course .case-img{width:100%;height:auto;}

/*contact*/
#contact{
    background: url("../images/contact-bg.jpg") no-repeat;
    background-size: cover;
    color: #ffffff;
}
#contact h2{
    font-weight: bold;
    margin-top: 0;
    margin-bottom: 25px;
}
#contact p{
    line-height:24px;
    margin-bottom:2px;
}
/*footer*/
footer{
    font-weight: 400;
    text-align: center;
    padding:20px;
    color:#999;
}
.introduction{
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    padding: 80px 0;
}