.m-nav>ul>li>span {
        position: absolute;
        width: 20px;
        height: 20px;
        background: url(2025new/images/m-nav_down.png) no-repeat;
        background-size: 14px 14px;
        background-position: center center;
        right: 0;
        top: 15px;
        cursor: pointer;
        display: block;
        color: #fff;
        transition: all 0.3s;}