html,body{
    color:#333;
    height: 100%;
    position:relative;
    background-color:#FFF;
    overflow-x: hidden;
}
html{
    font-size: 62.5%;
}
body{
    min-width:320px;
    font-size: 1.6rem;
    display: flex;
    flex-direction: column;
    height: auto;
    min-height: 100vh;
}
.tel_one{
    width: 100%;
    background: url('../images/service_1.jpg') no-repeat;
    background-size: cover;
    height: 46.25vw;
    min-height: 320px;
    margin: 0 auto;
    position: relative;
}
.tel_one_box{
    width:80%;
    max-width:1200px;
    position: absolute;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    text-align: center;
    color:#fff;
}
.tel_one img{
    width: 142px;
    margin: 0 auto;
}
.tel_one_text{
    font-size: 24px;
    line-height: 30px;
    padding-top: 10px;
}
.tel_one_btn{
    display:inline-block;
    padding:20px 50px;
    margin: 0 auto;
    background: #036BC1;
    border-radius: 10px;
    margin-top: 20px; 
    font-size: 18px;
    color: #FFFFFF;
    line-height: 20px;
}

.ser_cont{
    width: 100%;
    padding: 130px 0;
}
.ser_cont_box{
    width: 1200px;
    margin: 0 auto;
    text-align:center;
}
.ser_cont_bg{
    background: #F7F7F7;
}
.ser_cont_box_title{
    font-size: 36px;
    color: #515151;
}
.ser_cont_box_text{
    font-size: 18px;
    color: #515151;
    padding-top: 20px;
    line-height: 30px;
}
.ser_cont_box_mdl{
    width:100%;
    font-size: 16px;
    color: #515151;
    padding-top: 60px;
    line-height: 30px;
}
.ser_cont_box_more{
    width: 30%;
    margin: 0 auto;
    padding:21px 0;
    background: #036BC1;
    border-radius: 10px;
    font-size: 18px;
    color: #FFFFFF;
    margin-top: 50px;
}
.ser_cont_box_bottom{
    width:55%;
    margin:0 auto;
    margin-top:50px;
    position: relative;
}
.ser_cont_box_bottom img{
    width:100%;
}
.ser_cont_box_btm_text{
    width:30%;
    background: #036BC1;
    font-size: 14px;
    color: #FFFFFF;
    padding:14px 0;
}
.ser_cont_btmt_one{
    position: absolute;
    bottom: 24%;
    left: 50%;
    -webkit-transform: translate(-50%, 50%);
    -ms-transform: translate(-50%, 50%);
    transform: translate(-50%, 50%);
}
.ser_cont_btm_img{
    display:block;
}
.mser_cont_btm_img{
    display:none;
}
.ser_cont_btmt_two{
    margin:0 auto;
    margin-top:80px;
}

/*1200px以下导航栏和页脚的样式切换*/
@media (max-width: 1200px) {
    .ser_cont{
        padding:10rem 0;
    }
    .ser_cont_box{
        width: 90%;
        margin: 0 auto;
    }
    .ser_cont_box_title{
        font-size:3.2rem;
    }
    .ser_cont_box_text{
        font-size: 1.8rem;
        padding-top: 1.8rem;
        line-height: 2rem;
    }
    .ser_cont_box_mdl{
        font-size: 1.6rem;
        padding-top: 4rem;
        line-height: 1.8rem;
    }
    .ser_cont_box_bottom{
        width:65%;
    }
    .ser_cont_box_btm_text{
        padding:1.2rem 0;
    }
    .ser_cont_btmt_two{
        margin-top:6rem;
    }
}
@media (min-width: 769px) and (max-width: 1200px) {
    .tel_one img{
        width: 12rem;
    }
}

/* 媒体查询 - 平板设备 */
/*使用rem作单位*/
@media (max-width: 768px) {
    .tel_one{
        width: 100%;
        height: 100vw;
        min-height: 3rem;
        padding-top: 6rem;
        background: url('../images/mservice_1.jpg') no-repeat;
        background-size: cover;
    }
    .tel_one_box{
        width:90%;
    }
    .tel_one img{
        width: 12rem;
    }
    .tel_one_text{
        font-size: 2rem;
        line-height: 2.5rem;
        padding-top: 0.8rem;
    }
    .tel_one_btn{
        padding:1.8rem 4rem;
        border-radius: 0.9rem;
        font-size: 1.6rem;
    }
    .ser_cont{
        padding:5rem 0;
    }
    .ser_cont_box_title{
        font-size:2.4rem;
        color:#000;
    }
    .ser_cont_box_mdl{
        padding-top: 3rem;
    }
    .ser_cont_box_more{
        width: 60%;
        padding:2rem 0;
        border-radius: 1rem;
        font-size: 1.4rem;
        margin-top: 3rem;
    }
    
    .ser_cont_box_bottom{
        width:80%;
    }
    .ser_cont_box_btm_text{
        border-radius: 2rem;
    }
    .ser_cont_btm_img{
        display:none;
    }
    .mser_cont_btm_img{
        display:block;
    }
    .ser_cont_btmt_two{
        margin-top:5rem;
    }
}

/* 媒体查询 - 移动设备 */
/*使用rem作单位*/
@media (max-width: 480px) {
    .tel_one_box{
        width:96%;
    }
    .tel_one img{
        width: 7rem;
    }
    .tel_one_text{
        font-size: 1.8rem;
        line-height: 2rem;
    }
    .tel_one_btn{
        padding:1rem;
        border-radius: 2rem;
        font-size: 1.4rem;
    }
    .ser_cont{
        padding:5rem 0;
    }
    .ser_cont_box{
        width: 100%;
    }
    .ser_cont_box_title,.ser_cont_box_text{
        width:96%;
        margin:0 auto;
    }
    .ser_cont_box_text{
        font-size: 1.4rem;
    }
    .ser_cont_box_mdl{
        width:96%;
        padding-top:2rem;
        font-size: 1.4rem;
    }
    .ser_cont_box_more{
        width:50%;
        padding:1.4rem 0;
        border-radius: 2rem;
        font-size: 1.2rem;
        margin-top: 2rem;
    }
    .ser_cont_box_bottom{
        width:100%;
    }
    .ser_cont_box_btm_text{
        width:35%;
        font-size:1.2rem;
        padding:1rem 0;
    }
    .ser_cont_btmt_two{
        margin-top:4rem;
    }
}