*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
li{
    list-style: none;
}
.hidden{
    display: none;
}
.show{
    display: block;
}
a{
    text-decoration: none;
}
/******************* d2���� *********************/
.d2{
    font-family: "Microsoft Yahei", simHei;
    margin-bottom: 45px;
    position: relative;
}
.d2 > .zzc > a {
    color: #fff;
    font-size: 25px;
    text-decoration: underline;
}
.d2 > ul{
    overflow: hidden;
    border-bottom: 1px solid #cccccc;
    padding: 18px;
}
.d2 > ul > li{
    float: left;
}
.d2 > ul > li:first-child > img{
    width: 124px;
    height: 124px;
    border: 1px solid #eeeeee;
}
.d2 > ul > li:nth-child(2){
    height: 124px;
    padding-top: 18px;
    margin-left: 18px;
}
.d2 > ul > li:nth-child(2) > p:first-child{
    font-size: 26px;
    margin-bottom: 18px;
}
.d2 > ul > li:nth-child(2) > p:nth-child(2){
}
.d2 > ul > li:nth-child(2) > p:nth-child(2) > a{
    font-size: 20px;
    color: #999999;
}
/*****�ı�����*****/
.d2 > .txt{
    margin:0 18px;
    position: relative;
    width: 100%;
    margin-top: 13px;
    font-size: 22px;
}
/*** js������ ***/
#jt{
    position: absolute;
    width: 36px;
    height: 21px;
    bottom: -30px;
    right: 0;
    background-image: url("../../../images/learn/up-down.png");
    background-repeat: no-repeat;
}
.open{
    background-position: 0 -19px;
}
.height{
    height: 120px;
}
/********* dl1 **********/
#p1{
    font-size: 20px;
    color: #4c4b4c;
    line-height: 30px;
    overflow: hidden;
    width: 100%;
}
/***************** d3���� ********************/
.d3{
    border-top: 1px solid #cccccc;
    margin: 0px 20px;
    padding: 18px 0;
}
.d3 > p{
    font-family: "Microsoft Yahei", simHei;
    margin-bottom: 18px;
}
.d3 > p > span{
    font-size: 20px;
}
.d3 > .sp{
}
.d3 > .sp > img{
    width: 604px;
    height: 311px;
}
/****************** d4���� *******************/
.d4{
    font-family: "Microsoft Yahei", simHei;
    border-top: 1px solid #cccccc;
    margin: 0px 20px;
    padding: 18px 0;
}
.d4 > p{
    margin-bottom: 18px;
}
.d4 > p > span{
    font-size: 20px;
}
.d4 > div{
    box-shadow:0 0 15px rgb(204,204,204);
    padding-bottom: 18px;
}
.d4 > div > div{
    overflow: hidden;
    padding: 18px;
}
.d4 > div > div > a > img{
    float: left;
    width: 100%;
}
.d4 > div > div > ul{
    float: left;
    margin-left: 20px;
    padding: 22px 0;
}
.d4 > div > div > ul > li{
    font-size: 18px;
    line-height: 30px;
    color: #666666;
}
.d4 > div > div > ul > li:first-child{
    font-size: 25px;
    color: #4c4b4c;
    margin-bottom: 5px;
}
.d4 > div > p{
    font-size: 20px;
    color: #4c4b4c;
    padding: 0 18px;
    height: 51px;
    overflow: hidden;
}