*{
    padding: 0;
    margin: 0;
    list-style: none;
}
.box{
    width: 900px;
    height: 300px;
    border: solid 1px #cccccc;
    margin:10px  auto;
}
.box ul{
    display: flex;
    justify-content: space-between;
    text-align: center;
    overflow: scroll;
    height: 300px;
}
.btom{
    width: 900px;
    height: 50px;
    display: flex;
    margin:0 auto;
    justify-content: left;
}
.olf{
    display: flex;
    width: auto;
}
.olf .active{
    background: rgb(86, 201, 240);
    color: lightcoral;
}
.btom .olf li {
    margin-left: 17px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: lightblue;
    text-align: center;
    line-height: 20px;
}
.btom .olf li:hover{
    background: rgb(86, 201, 240);
    color: lightcoral;
}
.btom span{
    width: 50px;
    height: 20px;
    background: lightblue;
    text-align: center;
    line-height: 20px;
    margin-left: 17px;
}
.btom span:hover{
    background: rgb(86, 201, 240);
    color: lightcoral;
}
.fixd{
    position: fixed;
    left: 18.5%;
    top: 55%;
    width: 70px;
    height: 30px;
    background: rgb(240, 157, 3);
    text-align: center;
    line-height: 30px;
}
.fixd:hover{
    background: cornflowerblue;
    color: #000;
}
.fixd2{
    position: fixed;
    left: 18.5%;
    top: 60%;
    width: 70px;
    height: 30px;
    background: rgb(240, 157, 3);
    text-align: center;
    line-height: 30px;
}
.fixd2:hover{
    background: cornflowerblue;
    color: #000;
}