@media (max-width: 780px) {
    .about ul{
        display: flex;
        flex-wrap: wrap;
    }
    .about ul li{
        width:50% !important;
    }
    .jit,.jit ul,.jit ul li{
         width:100%;
    }
    .jit ul{
        padding-bottom:0;
    }
    .jit ul li{
        margin-bottom: 20px;
        box-sizing: border-box;
    }
    .tr_br{
        display:none;
    }
}