.history{
   
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    background-attachment:fixed;
    padding-bottom: 100px;}
.history-content{
    margin: 0 30px;}
.history-title{
    text-align: center;
    font-size: 36px;
    color: white;
    padding-top: 80px;}
.history-list::before{
    content: '';
    position: absolute;
    top: 0;
    right: 50%;
    height: 100%;
    width: 3px;
    background: #d7e4ed;}
.history-list{
    width: 80%;
    margin: 0 auto;
    position: relative;
    margin-top: 30px;
    padding-bottom: 30px;
    max-width: 1200px;}

.history-timeline-block{
    position: relative;
    margin-left: 0;
    margin: 10px 0;}
.history-timeline-content::before{
    content: '';
    position: absolute;
    top: 30%;
    left: 100%;
    height: 0;
    width: 0;
    border: 7px solid transparent;
    border-left: 7px solid #EEEEEE;}
.history-list::after{
    content: '';
    display: table;
    clear: both;}
.history-timeline-block::after{
    content: '';
    display: table;
    clear: both;}
.history-timeline-content::after{
    content: '';
    display: table;
    clear: both;}

.history-timeline-content{
    padding: 15px;
    position: relative;
    width: 40%;
    border: 1px solid #EEEEEE;
    border-radius: 5px;
    background-color: #EEEEEE;
    margin: 10px;
    left: 0%;
    float: left;
    cursor: pointer;}
.history-timeline-content:first-child{
    margin-top:0!important;}
.history-timeline-block:nth-child(odd) .history-timeline-content{
    float: right;
    right: 0;}
.history-timeline-block:nth-child(odd) .history-timeline-content::before {
    top: 30%;
    left: auto;
    border-color: transparent;
    border-right-color: #EEEEEE;
    right: 100%;}
.history-timeline-img{
    position: absolute;
    left: 50%;
    top: 24%;}
.history-timeline-img img{
    position: relative;
    left: -52%;}
.history-timeline-content:hover{
    color: #01755F;}
/* 历史沿革适配 */
@media only screen and (max-width: 960px){
    .history-timeline-content{
        width: 30%;
        left: 6%;}
    .history-timeline-block:nth-child(odd) .history-timeline-content {
        float: right;
        left: -6%;}
}
@media only screen and (max-width: 768px){
    .history-timeline-block .history-timeline-content{
        float: right!important;
        width: 47%;
        left: -16%!important;}
    .history-timeline-block .history-timeline-content::before {
        top: 20px;
        left: auto;
        border-color: transparent;
        border-right-color: #EEEEEE;
        right: 100%;}
    .history-list::before {
        content: '';
        position: absolute;
        top: 0;
        left: 20%;
        height: 100%;
        width: 3px;
        background: #d7e4ed;}
    .history-timeline-img {
        position: absolute;
        left: 20%;
        top: 24%;}
    .history-list{
        width: 100%!important;}
    .history-timeline-img img {
        left: -48%;}
    .history-title{
        padding-top: 50px!important;}
    
}
@media only screen and (max-width: 500px){
    .history-timeline-block .history-timeline-content{
        float: right!important;
        width: 60%;
        left: -1%!important;
        right: 0!important;}
    .history-timeline-block .history-timeline-content::before {
        top: 20px;
        left: auto;
        border-color: transparent;
        border-right-color: #EEEEEE;
        right: 100%;}
    .history-list::before {
        left: 15%;}
    .history-timeline-img {
        position: absolute;
        left: 13%;
        top: 16%;}
    .history-list{
        width: 100%!important;}
    .history-timeline-img img {
        left: -25%;}
    .history-title{
        padding-top: 50px!important;}
}
@media only screen and (max-width: 375px){
    .history-timeline-block .history-timeline-content{
        float: right!important;
        width: 78%;
        left: 6%!important;
        right: 0!important;}
    .history-timeline-block .history-timeline-content::before {
        top: 20px;
        left: auto;
        border-color: transparent;
        border-right-color: #EEEEEE;
        right: 100%;}
    .history-list::before {
        left: 0%;}
    .history-timeline-img {
        position: absolute;
        left: 0;
        top: 16%;}
    .history-list{
        width: 100%!important;}
    .history-timeline-img img {
        left: -48%;}
    .history-title{
        padding-top: 50px!important;}
}
/* 悬浮菜单 */
.fixed-banner{
    position: fixed;
    top:0;}