.is-new-post .new-txt::after {
    content: " NEW";
    display: inline-block;
    margin-left: .5em;
    padding: 2px 6px;
    font-size: 11px;
    font-weight: 700;
    line-height: 1;
    font-size: 12px;
    /* 任意 */
    color: #B40001;
}