.originalList>li{
    width: 32%;
    margin-right: 2%;
}

.originalList>li:nth-child(4n){
    margin-right: 2%;
}

.originalList>li:nth-child(3n){
    margin-right: 0%;
}

.video-list-item{
    width: 32%;
    margin-right: 2%;
}

.video-list-item:nth-child(4n){
    margin-right: 2%;
}

.video-list-item:nth-child(3n){
    margin-right: 0%;
}

.yinyuejie-list-item{
    width: 49%;
    margin-right: 2%;
}

.yinyuejie-list-item:nth-child(3n){
    margin-right: 2%;
}

.yinyuejie-list-item:nth-child(2n){
    margin-right: 0%;
}

.jiuba-list-item{
    width: 32%;
    margin-right: 2%;
}

.jiuba-list-item:nth-child(4n){
    margin-right: 2%;
}

.jiuba-list-item:nth-child(3n){
    margin-right: 0%;
}