layout.css

.lm_root {
    position: relative
}

.lm_row>.lm_item {
    float: left
}

.lm_content {
    overflow: hidden;
    position: relative
}

.lm_dragging, .lm_dragging * {
    cursor: move !important;
    user-select: none
}

.lm_maximised {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 40
}

.lm_maximise_placeholder {
    display: none
}

.lm_splitter {
    position: relative;
    z-index: 2
}

.lm_splitter:hover, .lm_splitter.lm_dragging {
    background: orange
}

.lm_splitter.lm_vertical .lm_drag_handle {
    width: 100%;
    position: absolute;
    cursor: ns-resize
}

.lm_splitter.lm_horizontal {
    float: left;
    height: 100%
}

.lm_splitter.lm_horizontal .lm_drag_handle {
    height: 100%;
    position: absolute;
    cursor: ew-resize
}

.lm_header {
    overflow: visible;
    position: relative;
    z-index: 1;
    user-select: none
}

.lm_header.lm_selectable {
    cursor: pointer
}

.lm_header [class^=lm_] {
    box-sizing: content-box !important
}

.lm_header .lm_controls {
    position: absolute;
    right: 3px
}

.lm_header .lm_controls>li {
    cursor: pointer;
    float: left;
    width: 18px;
    height: 18px;
    text-align: center
}

.lm_header ul {
    margin: 0;
    padding: 0;
    list-style-type: none
}

.lm_header .lm_tabs {
    position: absolute
}

.lm_header .lm_tab {
    cursor: pointer;
    float: left;
    height: 14px;
    margin-top: 1px;
    padding: 0 10px 5px;
    padding-right: 25px;
    position: relative
}

.lm_header .lm_tab i {
    width: 2px;
    height: 19px;
    position: absolute
}

.lm_header .lm_tab i.lm_left {
    top: 0;
    left: -2px
}

.lm_header .lm_tab i.lm_right {
    top: 0;
    right: -2px
}

.lm_header .lm_tab .lm_title {
    display: inline-block;
    overflow: hidden;
    text-overflow: ellipsis
}

.lm_header .lm_tab .lm_close_tab {
    width: 14px;
    height: 14px;
    position: absolute;
    top: 0;
    right: 0;
    text-align: center
}

.lm_stack {
    position: relative
}

.lm_stack>.lm_items {
    overflow: hidden
}

.lm_stack.lm_left>.lm_items {
    position: absolute;
    left: 20px;
    top: 0
}

.lm_stack.lm_right>.lm_items {
    position: absolute;
    right: 20px;
    top: 0
}

.lm_stack.lm_right>.lm_header {
    position: absolute;
    right: 0;
    top: 0
}

.lm_stack.lm_bottom>.lm_items {
    position: absolute;
    bottom: 20px
}

.lm_stack.lm_bottom>.lm_header {
    position: absolute;
    bottom: 0
}

.lm_stack.lm_docked {
    overflow: visible;
    z-index: 3
}

.lm_stack.lm_docked>.lm_header {
    z-index: 5
}

.lm_stack.lm_docked>.lm_items {
    *z-index: 3;
    transition: height .4s ease-in;
    border: solid 2px;
    border-image-slice: 1 !important;
    margin: -2px 0
}

.lm_stack.lm_docked.lm_left>.lm_items, .lm_stack.lm_docked.lm_right>.lm_items {
    transition: width .4s ease-in, height .001s linear
}

.lm_left.lm_stack .lm_header, .lm_right.lm_stack .lm_header {
    height: 100%
}

.lm_left.lm_dragProxy .lm_header, .lm_right.lm_dragProxy .lm_header, .lm_left.lm_dragProxy .lm_items, .lm_right.lm_dragProxy .lm_items {
    float: left
}

.lm_left.lm_dragProxy .lm_header, .lm_right.lm_dragProxy .lm_header, .lm_left.lm_stack .lm_header, .lm_right.lm_stack .lm_header {
    width: 20px;
    vertical-align: top
}

.lm_left.lm_dragProxy .lm_header .lm_tabs, .lm_right.lm_dragProxy .lm_header .lm_tabs, .lm_left.lm_stack .lm_header .lm_tabs, .lm_right.lm_stack .lm_header .lm_tabs {
    transform-origin: left top;
    top: 0;
    width: 1000px
}

.lm_left.lm_dragProxy .lm_header .lm_controls, .lm_right.lm_dragProxy .lm_header .lm_controls, .lm_left.lm_stack .lm_header .lm_controls, .lm_right.lm_stack .lm_header .lm_controls {
    bottom: 0
}

.lm_dragProxy.lm_left .lm_header .lm_tabs, .lm_stack.lm_left .lm_header .lm_tabs {
    transform: rotate(-90deg) scaleX(-1);
    left: 0
}

.lm_dragProxy.lm_left .lm_header .lm_tabs .lm_tab, .lm_stack.lm_left .lm_header .lm_tabs .lm_tab {
    transform: scaleX(-1);
    margin-top: 1px
}

.lm_dragProxy.lm_left .lm_header .lm_tabdropdown_list, .lm_stack.lm_left .lm_header .lm_tabdropdown_list {
    top: initial;
    right: initial;
    left: 20px
}

.lm_dragProxy.lm_right .lm_content {
    float: left
}

.lm_dragProxy.lm_right .lm_header .lm_tabs, .lm_stack.lm_right .lm_header .lm_tabs {
    transform: rotate(90deg) scaleX(1);
    left: 100%;
    margin-left: 0
}

.lm_dragProxy.lm_right .lm_header .lm_controls, .lm_stack.lm_right .lm_header .lm_controls {
    left: 3px
}

.lm_dragProxy.lm_right .lm_header .lm_tabdropdown_list, .lm_stack.lm_right .lm_header .lm_tabdropdown_list {
    top: initial;
    right: 20px
}

.lm_dragProxy.lm_bottom .lm_header, .lm_stack.lm_bottom .lm_header {
    width: 100%
}

.lm_dragProxy.lm_bottom .lm_header .lm_tab, .lm_stack.lm_bottom .lm_header .lm_tab {
    margin-top: 0;
    border-top: none
}

.lm_dragProxy.lm_bottom .lm_header .lm_controls, .lm_stack.lm_bottom .lm_header .lm_controls {
    top: 3px
}

.lm_dragProxy.lm_bottom .lm_header .lm_tabdropdown_list, .lm_stack.lm_bottom .lm_header .lm_tabdropdown_list {
    top: initial;
    bottom: 20px
}

.lm_drop_tab_placeholder {
    float: left;
    width: 100px;
    height: 10px;
    visibility: hidden
}

.lm_header .lm_controls .lm_tabdropdown:before {
    content: '';
    width: 0;
    height: 0;
    vertical-align: middle;
    display: inline-block;
    border-top: 5px dashed;
    border-right: 5px solid transparent;
    border-left: 5px solid transparent;
    color: white
}

.lm_header .lm_tabdropdown_list {
    position: absolute;
    top: 20px;
    right: 0;
    z-index: 5;
    overflow: hidden
}

.lm_header .lm_tabdropdown_list .lm_tab {
    clear: both;
    padding-right: 10px;
    margin: 0
}

.lm_header .lm_tabdropdown_list .lm_tab .lm_title {
    width: 100px
}

.lm_header .lm_tabdropdown_list .lm_close_tab {
    display: none !important
}

.lm_dragProxy {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 30
}

.lm_dragProxy .lm_header {
    background: transparent
}

.lm_dragProxy .lm_content {
    border-top: none;
    overflow: hidden
}

.lm_dropTargetIndicator {
    display: none;
    position: absolute;
    z-index: 20;
    transition: all 200ms ease
}

.lm_dropTargetIndicator .lm_inner {
    width: 100%;
    height: 100%;
    position: relative;
    top: 0;
    left: 0
}

.lm_transition_indicator {
    display: none;
    width: 20px;
    height: 20px;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 20
}

.lm_popin {
    width: 20px;
    height: 20px;
    position: absolute;
    bottom: 0;
    right: 0;
    z-index: 9999
}

.lm_popin>* {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0
}

.lm_popin>.lm_bg {
    z-index: 10
}

.lm_popin>.lm_icon {
    z-index: 20
}