.product_introduce{
    margin-bottom:108px; 
}
.container1{
    width: 1100px;
    margin: 0 auto;
}
.title{
    width: 100%;
    margin: 0 auto;
    text-align: center;
    padding: 30px 0 25px 0;
}
.title span{
    margin: 0 40px;
}
.little_title{
    display: inline-block;
    font-family: MicrosoftYaHei;
	font-size: 24px;
	font-weight: normal;
	font-stretch: normal;
	line-height: 37px;
	letter-spacing: 1px;
    color: #333333;
    border-bottom: 3px solid #333333;
    padding: 10px 0;
}
.txt_introduce{
    font-family: MicrosoftYaHei;
	font-size: 16px;
	font-weight: normal;
	font-stretch: normal;
	line-height: 24px;
	letter-spacing: 1px;
    color: #333333;
    width:643px;
    height:209px;
    float: right;
    padding: 10px 0;
}
.introduce_shenda,.introduce_detail{
    font-size: 16px;
    white-space: normal;
    word-break: break-all;
    word-wrap: break-word;
    line-height: 30px;
    text-indent: 2em;
    text-justify: inter-ideograph;
    text-align: justify;
    margin-bottom: 10px;
}
/* 发展历程 */
.middle_line {
    /* float: left; */
    width: 9px;
    border-right: 1px solid #ccc;
    margin-bottom: -10px;
    /* min-height: 800px; */
    position: absolute;
    left: 50%;
}
.drove_left{
    float: left;
    width: 515px
}
.drove_left img{
    float: left;
}
.drove_right{
    float: right;
    width: 500px;
    margin-top: 70px;
}
.drove_right img{
    float: right;
}
.f_dorve_intro{
    margin-bottom: 30px;
}
.f_dorve_intro::after{
    display: block;
    content: '';
    clear: both;
}
.f_dorve_intro h3,.l_dorve_intro h3{
    text-align: right;
    font-family: DIN-Medium;
    font-size: 24px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 37px;
    letter-spacing: 1px;
    color:#0f7b3b;
}
.l_dorve_intro h3{
    text-align: left;
}
.l_detail{
    float: right;
    width: 380px;
    margin-top: 25px;
}
.r_detail{
    float: left;
    width: 380px;
    margin-top: 25px;
}
.l_dorve_intro{
    margin-bottom: 30px;
}
.l_dorve_intro::after{
    display: block;
    content: '';
    clear: both;
}
.middle_line img{
    margin: 35px 0 52px 2px;;
}
.detail-introduce{
    font-size: 16px;
    white-space: normal;
    word-break: break-all;
    word-wrap: break-word;
    line-height: 36px;
    text-justify: inter-ideograph;
    text-align: justify
}
.footer{
    margin-top: 180px;
}
.f_dorve_intro img,.l_dorve_intro img{
    margin-top: 40px;
}