html, body {
    background: #fff;
}

.introduction_con {
    overflow: hidden;
}

.introduction_html {
    float: left;
    width: 100%;
    margin-top: 30px;
}

.cp_1 {
    float: left;
    width: 100%;
    position: relative;
    height: 400px;
    background: #f9f9f9;
}

.cp_1 img {
    float: left;
    width: 100%;
}

.cp_1 .p1 {
    position: absolute;
    top: 150px;
    font-size: 24px;
    color: #fff;
    left: 60px;
}

.cp_1 .p2 {
    position: absolute;
    top: 190px;
    font-size: 18px;
    color: #fff;
    left: 60px;
}

.cp_1 .p3 {
    position: absolute;
    top: 220px;
    font-size: 18px;
    color: #fff;
    left: 60px;
}

.cp_1 .p4 {
    position: absolute;
    top: 250px;
    font-size: 18px;
    color: #fff;
    left: 60px;
}
.step_title{
    float: left;
    width: 100%;
    margin-top: 30px;
    font-size: 36px;
    line-height: 50px;
    text-align: center;
    position: relative;
    padding-bottom: 15px;
}
.step_title i{
    position: absolute;
    height: 5px;
    bottom: 0;
    left: 50%;
    background: url("../img/cpjs/cpjs_2.jpg") 0 0 repeat-x;
}
.step_title_btm{
    float: left;
    width: 100%;
    text-align: center;
    color: #595959;
}
.cp_2{
    float: left;
    width: 100%;
    margin-top: 30px;
    text-align: center;
}
.cp_2 .cp_2_item{
    display: inline-block;
    text-align: center;
    line-height: 40px;
    cursor: pointer;
    width: 140px;
    border: 1px #000 solid;
    font-size: 14px;
    margin: 10px;
    transition: all 0.5s;
}
.cp_2 .cp_2_item.active,.cp_2 .cp_2_item:hover{
    background: #000;
    color: #fff;
}
.cp_content_1{
    float: left;
    width: 100%;
    margin-top: 30px;
    padding: 0 50px;
}
.cp_content_1 img{
    display: block;
    margin: 30px auto 30px auto;
}
.cp_content_1 p{
    text-indent: 4em;
    line-height: 50px;
    font-size: 16px;
}
.cp_content_2{
    float: left;
    width: 100%;
    margin-top: 30px;
    padding: 0 50px;
}
.cp_content_2 dl{
    margin-bottom: 30px;
}
.cp_content_2 dt{
    font-size: 20px;
    line-height: 50px;
    margin-bottom: 10px;
}
.cp_content_2 dd{
    line-height: 30px;
    padding: 0;
    margin: 0 0 0px 0;
    font-size: 14px;
}

.cp_content_3{
    float: left;
    width: 100%;
    margin-top: 30px;
    padding: 0 50px;
}
.cp_content_3 dl{
    margin-bottom: 30px;
}
.cp_content_3 dt{
    font-size: 20px;
    line-height: 50px;
    margin-bottom: 10px;
}
.cp_content_3 dd{
    line-height: 30px;
    padding: 0;
    margin: 0 0 0px 0;
    font-size: 14px;
}