.nav ul li:nth-child(2) a{
    color:#288ece;}
    .nav ul li:nth-child(2) {
        border-bottom: 1px solid #288ece;
    }
    .nav ul li:nth-last-child(1){
        margin-right: 0 !important;
    }
    .nav ul li:nth-last-child(1) a{
       color: #288ece !important;
       font-weight: 700;
    }
.synopsis {
    position: relative;
   
    /* background: url(../images/beibei_02.jpg) no-repeat; */
    background-position: left 400px;
}

.navigation ul {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: -50px;
    width: 700px;
}
.navigation ul li{
    float: left;
    width: 150px;
    height: 50px;
    font-size: 16px;
    margin-right: 1px;
    background-color: #aab0b7;
    opacity: 0.7;
    text-align: center;
    line-height: 50px;
    font-size: 16px;
    color: #fff;

}
.navigation ul li:nth-child(4){
    height: 48px;
    margin:0 11px;
    background-color: #fff;
   
    opacity: 1;
    border-top:2px solid #288ece;
}
.navigation ul li:nth-child(4) a {
    color: black;
}
.history-top {
    height: 282px;
    width: 1200px;
    margin: auto;
    overflow: hidden;
    border-bottom: 1px solid #d9d9d9;
}
.history-top h2 {
    margin-top: 120px;
    font-size: 90px;
    text-align: center;
    color: #e6e6e6;
    font-weight: 700;
    line-height: 90px;
    margin-left: 820px;
}
.history-top p {
    width:135px;
    margin-top: 20px;
    height: 44px;
    border-bottom: 1px solid #d9d9d9;
    text-align: right;
    font-size: 32px;
    padding-bottom: 5px;
}
.history-bottom {
    padding-top: 80px;
    width: 1200px;
    margin: auto;

}
.history-left {
    margin-right: 80px;
}
.history-right {
   padding-top: 15px;
   width: 992px;
}
.history-right img {
    margin-right: 50px;
}
.history-right p {
   float: left;
    text-indent: 2em;
    margin-top: 72px;
    line-height: 29px;
    font-size: 14px;
    color: #747474;
   width: 640px;
}
.history-right li {
    height: 212px;
  
    margin-bottom: 82px;
}
.pic {
  float: left;
    height: 212px;
    width: 350px;
}



/* .history-right li:nth-last-child(1){
    margin-top: 0;
} */