.header-btn {
    height              : 16px !important;
    width               : 23px;
    overflow            : hidden;
    cursor              : pointer;
    position            : absolute;
    cursor              : default;
    .image-2x("@{image-path}/@{c9-no-repeat}", @c9-no-repeat-width, @c9-no-repeat-height);
    background-repeat   : no-repeat;
    top                 : 5px;
    z-index             : 1000;
    .user-select(none);
}
.panel-settings {
    background-position: @tree-settings-background;
    right: @tree-settings-right;
    top: @tree-settings-top;
}
.panel-settings:hover,
.panel-settings.header-btnDown {
    background-position: @tree-settings-hover-background;
}
.c9-header-plus {
    background-position: 0px -294px;
    right:31px;
}
.deploy.c9-header-plus {
    right: 1px;
}

.c9-header-plus.header-btnOver {
    background-position: -30px -294px;
}
.c9-header-plus.header-btnDisabled {
    background-position: -60px -294px;
}
.c9-header-minus {
    background-position: 0px -320px;
    right: 1px;
    top: 0;
}

.deploy.c9-header-minus {
    right: -30px;
}

.c9-header-minus.header-btnOver {
    background-position: -30px -320px;
}
.c9-header-minus.header-btnDisabled {
    background-position: -60px -320px;
}
.c9-header-divider:before {
    background: url("@{image-path}/@{c9-no-repeat}") no-repeat -100px -293px;
    content: "";
    display: block;
    height: 26px;
    left: 0;
    position: absolute;
    top: 0;
    width: 2px;
    -moz-user-select: -moz-none;
    -khtml-user-select: none;
    -webkit-user-select: none;
    -o-user-select: none;
    user-select: none;
}