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/pr_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;
}
.tel_one img{
    width: 142px;
    margin: 0 auto;
}
.tel_one_text{
    font-size: 24px;
    color: #333333;
    line-height: 30px;
    padding-top: 10px;
}
.tel_one_btn{
    display:inline-block;
    /*width: 45%;*/
    padding:20px 50px;
    margin: 0 auto;
    background: #036BC1;
    border-radius: 10px;
    margin-top: 20px; 
    font-size: 18px;
    color: #FFFFFF;
    line-height: 20px;
}

.pr_two{
    width: 100%;
    background: #FFFFFF;
    padding:130px 0;
}
.pr_two_cont{
    width: 1200px;
    margin: 0 auto;
}
.pr_two_top_title{
    font-size: 36px;
    color: #515151;
    text-align: center;
}
.pr_two_top_text{
    font-size: 18px;
    color: #515151;
    text-align: center;
    padding-top: 19px;
}
.pr_two_bottom{
    width:100%;
}
.mpr_two_bottom{
    display: none;
}
.pr_two_bottom ul{
    width:100%;
    margin-top: 60px;
}
.pr_two_bottom li{
    width:20%;
    margin:0 2.5%;
    padding:20px 0;
    min-height: 330px;
    background: #FFFFFF;
    box-shadow: 0px 0px 10px 0px rgba(0,0,0,0.16);
    border-radius: 8px;
    float: left;
    margin-top:30px;
}
.pr_two_bottom_img{
    width:45%;
    margin:0 auto;
    text-align:center;
    padding:15px 0 7px 0;
}
.pr_two_bottom li img{
    width:100%;
}
.pr_two_bottom_title{
    font-size: 20px;
    color: #515151;
    text-align: center;
}
.pr_two_bottom_text1{
    width: 90%;
    margin: 0 auto;
    font-size: 16px;
    color: #515151;
    padding-top: 16px;
    text-align: center;
}
.pr_two_bottom_text2{
    width:60%;
    margin: 0 auto;
    background: #036BC1;
    border-radius: 5px;
    margin-top: 30px;
    font-size: 14px;
    color: #FFFFFF;
    text-align: center;
    padding: 10px 3px;
}

/*1200px以下导航栏和页脚的样式切换*/
@media (max-width: 1200px) {
    .pr_two{
        padding:10rem 0;
    }
    .pr_two_cont{
        width: 98%;
        margin: 0 auto;
    }
    .pr_two_bottom li{
        width:21%;
        margin:0 2%;
        min-height: 34rem;
        margin-top:3rem;
    }
    .pr_two_top_title{
        font-size:3.2rem;
    }

}
@media (min-width: 769px) and (max-width: 1200px) {
    .tel_one img{
        width: 12rem;
    }
    .pr_two_cont{
        width: 100%;
    }
}

/* 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/mpr_1.jpg') no-repeat;
        background-size: cover;
    }
    .tel_one_box{
        width:90%;
    }
    .tel_one img{
        width: 12rem;
    }
    .tel_one_text{
        font-size: 2rem;
        color: #2C2C2C;
        line-height: 2.5rem;
        padding-top: 0.8rem;
    }
    .tel_one_btn{
        padding:1.8rem 4rem;
        border-radius: 0.9rem;
        font-size: 1.6rem;
    }
    .pr_two{
        padding:5rem 0;
    }
    .pr_two_cont{
        width: 100%;
    }
    .pr_two_top_title{
        font-size:2.4rem;
        color:#000;
    }
    .pr_two_top_text{
        width:92%;
        margin:0 auto;
        font-size:1.8rem;
        padding-top:1.8rem;
    }
    .pr_two_bottom{
        display: none;
    }
    .mpr_two_bottom{
        display:block;
    }
    .mpr_two_bottom ul{
        width:100%;
        margin-top:2rem;
    }
    .mpr_two_bottom li{
        width:92%;
        margin:0 auto;
        padding:3rem 4%;
        box-shadow: 0px 0px 8px 0px rgba(0, 0, 0,0.15);
        border-radius: 1rem;
        margin-top: 2rem;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    .mpr_two_bottom .mpr_two_bottom_img{
        /*width:7rem;*/
        width:11%;
        margin-right:2rem;
    }
    .mpr_two_bottom .mpr_two_bottom_img img{
        width:100%;
    }
    .mpr_two_bottom .mpr_two_btm_mdl_title{
        font-size: 1.8rem;
        color: #202020;
        width:100%;
    }
    .mpr_two_bottom .mpr_two_btm_mdl{
        text-align:left;
        width:60%;
    }
    .mpr_two_bottom .mpr_two_btm_mdl_text1{
        font-size: 1.6rem;
        color: #848484;
        padding-top: 0.8rem;
    }
    .mpr_two_bottom .mpr_two_btm_rgt{
        /*width:9.8rem;*/
        width:17%;
        text-align:right;
        font-size: 1.6rem;
        color: #848484;
    }
}

/* 媒体查询 - 移动设备 */
/*使用rem作单位*/
@media (max-width: 480px) {
    .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;
    }
    
    .pr_two_top_text{
        font-size:1.4rem;
        padding-top:1.5rem;
    }
    .mpr_two_bottom li{
        padding:2rem 4%;
    }
    .mpr_two_bottom .mpr_two_bottom_img{
        /*width:5rem;*/
        width:16%;
    }
    .mpr_two_bottom .mpr_two_btm_mdl{
        width:51%;
    }
    .mpr_two_bottom .mpr_two_btm_mdl_title{
        font-size: 1.4rem;
    }
    .mpr_two_bottom .mpr_two_btm_mdl_text1{
        font-size: 1.2rem;
        padding-top: 0.8rem;
    }
    .mpr_two_bottom .mpr_two_btm_rgt{
        /*width:10.5rem;*/
        width:25%;
        font-size: 1.2rem;
    }
}