ul.tree, ul.tree ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    padding-left: 7px;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    cursor: default;
    border-left: 1px dotted #888888;
}

ul.tree li {
    margin: 0;
    padding: 0 12px 0 4px;
    line-height: 22px;
}

ul.tree li::before {
    content: ' ';
    display: inline-block;
    position: relative;
    float: right;
    right: 100%;
    top: 1px;
    margin-right: 3px;
    width: 9px;
    height: 10px;
    border-bottom: 1px dotted #888888;
}

ul.tree li.last::before {
    border-bottom: none;
    border-top: 1px dotted #888888;
    background-color: white;
    top: 10px;
    height: 11px;
}

.exp_col {
    position: absolute;
    margin-top: 4px;
    margin-left: -20px;
    vertical-align: sub;
    width: 12px;
    height: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.exp_col {
    position: absolute;
    display: inline-block;
    width: 7px;
    height: 7px;
    margin-left: -16px;
    margin-top: 7px;
    background: #c9cbcd;
    border: 1px solid #848484;
}

.exp_col.expanded::before {
    content: ' ';
    display: inline-block;
    position: relative;
    float: left;
    width: 5px;
    height: 5px;
    background: #ACAEB1;
    background: linear-gradient(0deg, rgba(172, 174, 177, 1) 0%, rgba(159, 161, 164, 1) 40%, rgba(255, 255, 255, 1) 40%, rgba(255, 255, 255, 1) 60%, rgba(152, 154, 157, 1) 60%, rgba(141, 143, 147, 1) 100%);
    border: 1px solid #c9cbcd;
}

.exp_col.collapsed {
    background: linear-gradient(0deg, rgba(172, 174, 177, 1) 0%, rgba(141, 143, 147, 1) 100%);
    width: 5px;
    height: 5px;
    border: 1px solid #c9cbcd;
    outline: 1px solid #848484;
    margin-left: -15px;
    margin-top: 8px;
}

.exp_col.collapsed::before {
    content: ' ';
    display: inline-block;
    position: relative;
    float: left;
    width: 5px;
    height: 5px;
    background: white;
    outline: red;
    --t: 20%;
    clip-path: polygon(
            calc(50% - var(--t) / 2) 0,
            calc(50% + var(--t) / 2) 0,
            calc(50% + var(--t) / 2) calc(50% - var(--t) / 2),
            100% calc(50% - var(--t) / 2),
            100% calc(50% + var(--t) / 2),
            calc(50% + var(--t) / 2) calc(50% + var(--t) / 2),
            calc(50% + var(--t) / 2) 100%,
            calc(50% - var(--t) / 2) 100%,
            calc(50% - var(--t) / 2) calc(50% + var(--t) / 2),
            0 calc(50% + var(--t) / 2),
            0 calc(50% - var(--t) / 2),
            calc(50% - var(--t) / 2) calc(50% - var(--t) / 2)
    );
}

img.exp_col_empty {
    position: absolute;
    margin-top: 4px;
    margin-left: -20px;
    vertical-align: sub;
    width: 16px;
}

img.icon_tree {
    vertical-align: middle;
    padding-left: 3px;
    margin-top: -3px;
    max-height: 16px;
}

a.node {
    padding: 2px;
}

span.node a {
    padding-left: 3px;
}

span.node {
    margin-left: -1px;
    padding-right: 3px;

    padding-top: 4px;
    padding-bottom: 4px;
}

span.node:hover {
    margin-left: -1px;
    padding-right: 3px;
    padding-top: 4px;
    padding-bottom: 4px;
    background-color: #DCEDFF;
    border-radius: 2px;
}

span.node_selected {
    margin-left: -2px;
    padding-right: 3px;

    padding-top: 4px;
    padding-bottom: 4px;
    background-color: #CEFFCE;
    border: 1px solid #8AE88A;
    border-radius: 2px;
}

span.node_selected a {
    padding-left: 3px;
}

.menu, .sub-menu {
    margin: 0;
    padding: 0;
    font: 10px Verdana, sans-serif;
}

.menu,
.sub-menu {
    list-style: none;
    background: #000;
}

.sub-menu {
    background: #F1F1F1;
}

.menu a {
    text-decoration: none;
    display: inline-block;
    padding: 8px;
}

.menu span {
    position: absolute;
    width: 100%;
    height: 100%;
}

.menu div {
    position: absolute;
    right: 4px;
    top: 0px;
    padding: 8px;
}

.menu .submenu-arrow {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 4px solid #666;
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    padding: 0;
}

.menu .menu_img {
    vertical-align: middle;
}

.menu img {
    text-decoration: none;
    display: inline-block;
    vertical-align: sub;
    padding-left: 5px;
    max-height: 16px;
}

.menu li {
    position: relative;
}

.menu li:hover {
    background: aquamarine;
    cursor: pointer;
}

.sub-menu li:hover {
    background: aquamarine;
}

.menu li:hover > .sub-menu {
    display: block;
}

.menu {
    width: 150px;
    position: absolute;
    background: #F1F1F1;
    -webkit-user-select: none; /* Chrome/Safari */
    -moz-user-select: none; /* Firefox */
    -ms-user-select: none; /* IE10+ */
    cursor: default;
    box-shadow: 2px 2px 3px #BDBDBD;
}


.sub-menu {
    display: none;
    position: absolute;
    min-width: 150px;
    box-shadow: 2px 2px 3px #BDBDBD;
}

.menu .sub-menu {
    top: 0;
    left: 100%;
}