.activity-sel {
    padding: 40px 0;
    display: flex;
    justify-content: center;
    align-items: center;
    border-bottom: 1px solid #f5f5f5;
}


.activity-sel a {
    font-size: 14px;
    width: 120px;
    text-align: center;
    padding: 10px 0;
    border: 1px solid #eeeeee;
    margin: 0 10px;
    border-radius: 5px;
}

.activity-sel a:hover {
    background-color: #e23434;
    color: #ffffff;
}

.selasw {
    background-color: #e23434;
    color: #ffffff;
}

.introid {
    display: block;
}

.serviceid {
    display: none;
}

.contactid {
    display: none;
}


.deisgn-intro {
    padding: 30px 0;
}


.intro-cnt {
    text-align: center;
    padding: 20px 0 40px;
}

.intro-cnt h3 {
    font-size: 32px;
    color: #d71718;
}

.intro-cnt h4 {
    font-size: 22px;
    line-height: 58px;
}

.intro-cnt h5 {
    font-size: 18px;
}

.intro-cnt p {
    font-size: 14px;
    margin-top: 2px;
}


.deisgn-img {
    width: 100%;
}

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






/* 联系我们 */

.deisgn-contact {
    padding: 40px 0;
}

.contact-img {
    width: 60%;
    margin: 0 auto;
}

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

.contact-txt {
    text-align: center;
    padding: 50px 0;
}

.contact-txt h4 {
    font-size: 22px;
}

.contact-txt p {
    font-size: 18px;
    padding: 4px 0 0;
}

.contact-btm {
    display: flex;
    justify-content: center;

}

.contact-btm p {
    width: 240px;
    margin: 0 15px;
}

.contact-btm p img {
    width: 100%;
    height: auto;
}


@media only screen and (max-width: 1340px) {
    .activity-sel {
        padding: 30px 0;
    }

    .deisgn-intro {
        padding: 25px 0;
    }

    .intro-cnt {
        padding: 10px 0 30px;
    }


    .intro-cnt h3 {
        font-size: 28px;
    }

    .intro-cnt h4 {
        font-size: 20px;
        line-height: 50px;
    }

    .intro-cnt h5 {
        font-size: 16px;
    }

    .intro-cnt p {
        font-size: 12px;
    }



    .contact-txt h4 {
        font-size: 20px;
    }

    .contact-txt p {
        font-size: 16px;
    }

}

@media only screen and (max-width: 769px) {
    .activity-sel {
        padding: .3rem 0;
    }

    .activity-sel a {
        width: 100px;
        font-size: 12px;
        margin: 0 .1rem;
    }




    .deisgn-intro {
        padding: .3rem .1rem;
    }

    .intro-cnt h3 {
        font-size: 26px;
    }

    .intro-cnt h4 {
        font-size: 18px;
        line-height: 50px;
    }









    /* 联系我们 */
    .contact-img {
        width: 90%;
    }

    .contact-txt {
        padding: .4rem .1rem;
    }

    .contact-txt h4 {
        font-size: 18px;
    }

    .contact-txt p {
        font-size: 14px;
    }

}