css多行省略号

    height: 100%;
    line-height: 22px;
    color: rgba(0, 0, 0, 0.75);
    font-size: 14px;
    word-break: break-word;
    overflow : hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 9;
    -webkit-box-orient: vertical;