html {
    height: 100%;
    width: 100%;
    margin: 0px;
    padding: 0px;

    scroll-behavior: smooth;
    /* overflow: hidden; */
}

body {
    height: 100%;
    width: 100%;
    margin: 0px;
    padding: 0px;

    font-family: Arial, Helvetica, sans-serif;
    font-size: 14px;
}


/* ####### main grid ####### */

#main_grid_container {
    /* position: absolute; */
    height: 100%;
    width: 100%;
    margin: 0px;
    padding: 0px;

    display: grid;
    grid-template-columns: 40px 266px 1fr 1fr 400px;
    grid-template-rows: 1fr 24px;
    gap: 0px;
    overflow: hidden;
}

.main_grid_child {
    position: relative;
}