.two-col-layout .left_conts {
    flex: 0 0 25%;
    max-width: 25%;
    width: 25% !important;
    display: none !important;
}
.two-col-layout:not(:has(.leftmenu)) .main_conts {
    width: 100% !important;
    max-width: 100% !important;
    float: none !important;
}