.about-history-list {
    position: relative;
    width: 1300px;
}

.about-history-list .flex-viewport {
    padding: 0;
}

.about-history-list .flex-viewport:before {
    position: absolute;
    top: 50%;
    right: 0;
    left: 0;
    border-top: 1px solid #C7C7C7;
    content: '';
}

.about-history-list .slides li {
    position: relative;
    width: 253px;
    height: 870px;
    /*margin-right: 31px;*/
}

.about-history-list .slides li .item {
    position: absolute;
    right: -32px;
    top: calc(50% + 44px);
    left: -32px;
    min-height: 152px;
    padding: 30px;
    background-color: #f3f3f3;
    width: 350px;
    cursor: pointer;
}

.about-history-list .slides li .item:before {
    position: absolute;
    top: -49px;
    left: 50%;
    width: 20px;
    height: 20px;
    overflow: hidden;
    margin-left: -10px;
    -webkit-border-radius: 100%;
    -moz-border-radius: 100%;
    border-radius: 100%;
    background-color: #fff;
    border: solid 1px #ccc;
    content: '';
}

.about-history-list .slides li .item:hover:before{
    border-color: #690;
}
.about-history-list .slides li .item:hover:after{
    background-color: #690;
}

.about-history-list .slides li .item:after {
    position: absolute;
    top: -45px;
    left: 50%;
    width: 12px;
    height: 12px;
    overflow: hidden;
    margin-left: -6px;
    -webkit-border-radius: 100%;
    -moz-border-radius: 100%;
    border-radius: 100%;
    background-color: #ccc;
    content: '';
}

.about-history-list .slides li:nth-child(even) .item {
    top: auto;
    bottom: calc(50% + 34px);
}

.about-history-list .slides li:nth-child(even) .item:before {
    top: auto;
    bottom: -49px;
}

.about-history-list .slides li:nth-child(even) .item:after {
    top: auto;
    bottom: -45px;
}

.about-history-list .slides li .item:hover {
    background-color: #690;
}

.about-history-list .slides li .item .sanjiao {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    border-width: 0 20px 15px;
    border-style: solid;
    border-color: transparent transparent #f3f3f3;
}

.about-history-list .slides li .item:hover .sanjiao {
    border-color: transparent transparent #690;
}

.about-history-list .slides li:nth-child(even) .item .sanjiao {
    top: auto;
    bottom: -15px;
    border-width: 15px 20px 0;
    border-color: #f3f3f3 transparent transparent;
}
.about-history-list .slides li:nth-child(even) .item:hover .sanjiao{
    border-color: #690 transparent transparent;
}

.about-history-list .slides li .item h3 {
    height: 50px;
    line-height: 50px;
    margin: 0;
    font-size: 36px;
    color: #333;
    text-align: left;
    font-weight: bold;
}

.about-history-list .slides li .item:hover h3 {
    color: #fff;
}

.about-history-list .slides li .item .desc {
    line-height: 24px;
    font-size: 16px;
    color: #333;
}

.about-history-list .slides li .item:hover .desc {
    color: #ffffff;
}

.about-history-list .slides li .item .desc p {
    margin: 0;
}

.about-history-list .slides li .item .desc p img {
    max-width: 290px;
    margin-top: 10px;
}

.about-history-list .flex-direction-nav {
    padding: 0;
    margin: 0;
    list-style: none;
}

.about-history-list .flex-direction-nav a {
    position: absolute;
    top: 50%;
    width: 40px;
    height: 40px;
    line-height: 40px;
    overflow: hidden;
    margin-top: -20px;
    font-size: 30px;
    color: #ccc;
    text-align: center;
    font-family: simsun, sans-serif;
    border: solid 1px #ccc;
    border-radius: 50%;

}

.about-history-list .flex-direction-nav a:hover{
    background: #690;
    border-color: #690;
    color: #ffffff;
}

.about-history-list .flex-direction-nav a.flex-prev {
    left: -48px;
    padding-right: 2px;
}

.about-history-list .flex-direction-nav a.flex-next {
    right: -48px;
    padding-left: 3px;
}

.about-history-list .flex-direction-nav a:active{text-decoration: none;outline: 0;}
.about-history-list .flex-direction-nav a:focus{text-decoration: none;outline: 0;}