tip-directive {
    display: inline-flex;
    height: 20px;
    line-height: 20px;
    margin-left: 5px;
    *{
        text-indent: 0;
    }
    .iconfont {
        color: rgba(0, 0, 0, .5);
        cursor: help;
        display: inline-block;
        font-weight: initial;
    }
    &:hover {
        .tips-message {
            visibility: visible;
        }
    }
}