#head-section{
    width: 100%;
    background: #87b2dc;
    padding: 100px 0;
}
#head-section-img{
    text-align: center;
    padding-right:5% ;
}
#head-section-img img{
    width: 100%;
}
#head-introduce{
   display: flex;
}

#head-content-box{
    box-sizing: border-box;
    padding: 20px 5%;
    color: white;
}
.head-title{
    font-size: var(--fs-xl);
    margin-bottom: 30px;
}
.head-content{
    opacity: .8;
}
#head-content-box a{
    background: #4c96e1;
    color: white;
    display: inline-block;
    padding: 10px 50px;
    margin-top: 50px;
    border-radius: 3px;

}

#second-section{
    text-align: center;
    padding: 50px 0;
}
#second-section-title{
    text-align: center;
    margin: 30px 0;
    padding: 0 20px;
}
#second-section img{
    width: 90%;
    max-width:700px ;
}
#thired-section{
    padding: 50px;
    margin-bottom: 100px;
}
#thired-section-title{
    text-align: center;
}
#thired-section-content{
    font-size: var(--fs-m);
    text-align: center;
    margin: 30px auto 0;
    padding: 0 15px;
    max-width: 900px;
}

#fourth-img img{
    width: 100%;
}
#fourth-content{
    display: flex;
    flex-direction: column;
    justify-content:center;
}
#fourth-content .page-title{
    text-align: center;
    margin-bottom: 20px;
}
#fourth-text{
    width: 60%;
    margin: 20px auto;
}
#fourth-button{
    text-align: center;
    margin-top: 30px;
}
#fifth-section{
    padding-top: 0px;
}

#fifth-section .page-title{
    text-align: center;
    margin: 30px 0;
    padding: 0 20px;
}
#fifth-conent{
    /*color: #0b1078;*/
    display: flex;


}
.fifth-tag{
}
#joinus-content{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items:center;
}
.fifth-img-box img{
    width: 100%;
}
#joinus-title{
    /*text-align: center;*/
    font-size: var(--fs-m);
    font-weight: bold;
}
#joinus-content{
    height: 100%;
    box-sizing: border-box;
    padding: 50px 5%;
}
#fifth-button{
    margin-top: 20px;
}
.keyword-section{
    margin-top: 30px;
}
@media screen and (max-width:1201px ) {

    #fourth-text{
        width: 90%;
    }

}
@media screen and (max-width:997px ) {
    #joinus-title{
        font-weight: normal;
    }
    #thired-section-title{
        margin-bottom: 50px;
    }
    .section-text{
        font-size: var(--fs-sm)!important;
    }
    #second-section-title{
        font-size: var(--fs-b);
    }
    #head-content-box{
        text-align: center;
    }
    #head-content-box a{
        font-size: var(--fs-sm);
    }
    #thired-section{
        padding: 10px;
    }
    #fourth-content .page-title{
        margin-top: 55px;
        font-size: var(--fs-m);
    }
    #fifth-conent>.row{
        display: flex;
    }
    #fifth-conent>.row>div{
        order: 1;
        display: flex;
    }
    .fifth-img-box{
        order: 0!important;
    }
    #fifth-button{
        text-align: center;
        margin-top: 30px;
    }
    #joinus-title{
        margin-bottom: 40px;
    }
    .fifth-tag{
        margin-bottom: 10px;
    }
}