*{
    margin:0;
    padding:0;
}
ul{
    list-style: none;
}
a{
    color: #333;
}
body{
    background: #fff;
}
.header{
    height: 80px;
    width:100%;
    background: #fff;
    border-bottom: 1px solid#ddd;
}

.nav-box{
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 32px;
    font-weight: 600;
    color: #333;
    padding-top: 20px;
}
.nav-box .nav{
    display: flex;
    font-size: 16px;
    color: #333;
}
.nav-box .nav li{
    padding-left: 40px;
}

.intro{
    width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
    display: flex;
}
.intro .l{
    margin-right: 20px;
}
.intro .r{
    line-height: 40px;
    font-size: 18px;
    color: #333;
}

.edu_tit{
    width: 1200px;
    margin: 0 auto;
    font-size: 20px;
    font-weight: 900;
    color: #333;
    padding-left: 20px;
    padding-top: 20px;
    padding-bottom: 20px;
}
.edu_c{
    width: 1200px;
    margin: 0 auto;
    line-height: 25px;
    font-size: 18px;
    font-weight: 300;
    color: #333;
    padding-left: 30px;
    padding-bottom: 20px;
}

.pub_tit{
    width: 1200px;
    margin: 0 auto;
    font-size: 20px;
    font-weight: 900;
    color: #333;
    padding-left: 20px;
    padding-top: 20px;
    padding-bottom: 20px;
}
.pub_c{
    width: 1200px;
    margin: 0 auto;
    line-height: 25px;
    font-size: 18px;
    font-weight: 300;
    color: #333;
    padding-bottom: 20px;
    padding-left: 30px;
    padding-right: 50px;
}
.bold{
    font-size: 18px;
    font-weight: 600;
    color: #333;
}

/* .exp{
    width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
    display: flex;
} */
.exp_tit{
    width: 1200px;
    margin: 0 auto;
    font-size: 20px;
    font-weight: 900;
    color: #333;
    padding-left: 20px;
    padding-top: 20px;
}
.exp_n{
    width: 1200px;
    margin: 0 auto;
    font-size: 18px;
    font-weight: 600;
    color: #333;
    padding-top: 40px;
    padding-left: 30px;
    padding-bottom: 5px;
}
.exp_id{
    width: 1200px;
    margin: 0 auto;
    line-height: 20px;
    font-size: 18px;
    font-weight: 300;
    color: #333;
    padding-left: 30px;
    padding-bottom: 5px;
}
.exp_c{
    width: 1200px;
    margin: 0 auto;
    line-height: 25px;
    font-size: 18px;
    font-weight: 300;
    color: #333;
    padding-left: 30px;
    padding-bottom: 10px;
}
.exp_img{
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
}