滚动条美化

<style>
    /** 长文本显示...美化 **/
    .long {
        vertical-align:middle;
        text-align:center;
        word-break: break-all;/*分行*/
        /*white-space: nowrap;不换行用这个*/
        overflow:hidden; /*超出部分省略号显示*/
        text-overflow:ellipsis; /*省略号显示*/
        display:-webkit-box;
        -webkit-text-overflow:ellipsis; /*兼容*/
        -webkit-box-orient:vertical;
        -webkit-line-clamp:2; /*显示2行*/
    }

    /** 滚动条美化代码 **/
    ::-webkit-scrollbar-track-piece {
        background-color: #fff;
        -webkit-border-radius: 0
    }
    ::-webkit-scrollbar {
        width: 10px;
        height: 10px
    }
    ::-webkit-scrollbar-thumb {
        height: 50px;
        background-color: #b8b8b8;
        -webkit-border-radius: 6px;
        outline: 2px solid #fff;
        outline-offset: -2px;
        border: 2px solid #fff;
        filter: alpha(opacity = 50);
        -moz-opacity: 0.5;
        -khtml-opacity: 0.5;
        opacity: 0.5
    }
    ::-webkit-scrollbar-thumb:hover {
        height: 50px;
        background-color: #878987;
        -webkit-border-radius: 6px
    }
</style>