.product{
    height: auto;
    display: inline-block;
    background-color: #f8f8f8;
    padding-bottom: 5%;
    width: 100%;
    padding-top: 1%;
}
.pro-left{
    width: 35%;
    float: left;
    margin-top: 2%;
}
.pro-left img{
    width: 100%}
.pro-right {
    width: 62%;
    float: right;
    margin-top: 2%;
}
.pro-right h3{
    color: #187bb7;
    font-size: 27px;
    padding-bottom: 2%;
}
.pro-right h4{
    font-size: 23px;
    letter-spacing: 2px;
    font-weight: bold;
}
.pro-right p{
    font-size: 15px;
    line-height: 32px;
}
.case-bottom {
    width: 100%;
    height: auto;
    display: inline-block;
}
.case-bottom h3 {
    font-size: 23px;
    color: #000;
    line-height: 25px;
    font-weight: bold;
    letter-spacing: 1px;
    margin-bottom: 18px;
}
.caseb-box {
    width: 100%;
    height: auto;
    display: inline-block;
}
.caseb-box ul {
    width: 100%;
    height: auto;
    display: inline-block;
}

.caseb-box li {
    width: 100%;
    height: 48px;
}
.ptb-left {
    width: 17%;
    float: left;
    text-align: center;
    border: 1px solid #dcdcdc;
    color: black;
    height: 47px;
    line-height: 47px;
    padding-left: 0;
}
.ptb-right {
    width: 79%;
    float: left;
    border: 1px solid #dcdcdc;
    text-align: left;
    font-size: 15px;
    color: black;
    height: 47px;
    line-height: 47px;
    padding-left: 3%;
}
.caseb-box li:nth-child(2n) {
    background: #fff;
}