html,
body {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow: hidden;
}

body {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

#frame_top,
#frame_bottom {
    width: 100%;
    height: 4vh;
    min-height: 20px;
    box-sizing: border-box;
    padding: 2px;
    background-color: coral;
    display: flex;
    align-items: center;
}

#frame_middle {
    flex: 1;
    display: flex;
    width: 100%;
    height: auto;
    overflow: hidden;
}

#frame_left,
#frame_right {
    height: 100%;
    overflow: auto;
}

#frame_left {
    width: 50%;
    min-width: 50px;
}

#frame_right {
    width: 50%;
    min-width: 50px;
    position: relative;
}

#frame_separator {
    width: 10px;
    background-color: Peachpuff;
    cursor: ew-resize;
}

/* #frame_right_overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: transparent;
    z-index: -1;
    pointer-events: none;
}

#frame_right_overlay.overlay_active {
    z-index: 1;
    pointer-events: auto;
} */