.dd {    position: relative;    display: block;    margin: 0;    padding: 0;    max-width: 600px;    list-style: none;    font-size: 13px;    line-height: 20px;}.dd-list {    display: block;    position: relative;    margin: 0;    padding: 0;    list-style: none;}.dd-list .dd-list {    padding-left: 30px;}.dd-collapsed .dd-list {    display: none;}.dd-item, .dd-empty, .dd-placeholder {    display: block;    position: relative;    margin: 0;    padding: 0;    min-height: 20px;    font-size: 13px;    line-height: 20px;}.dd-handle {    display: block;    height: auto;    margin: 5px 0;    padding: 8px 16px;    cursor: move;    color: #979898;    text-decoration: none;    font-weight: bold;    border: 1px solid #e5e5e5;    background: #fafafa;    box-sizing: border-box;    -moz-box-sizing: border-box;}.dd-handle:hover {    color: #317eeb;    background: #fff;}.dd-item>button {    display: block;    position: relative;    cursor: pointer;    float: left;    width: 25px;    height: 20px;    margin: 5px 0;    padding: 0;    text-indent: 100%;    white-space: nowrap;    overflow: hidden;    border: 0;    background: transparent;    font-size: 12px;    line-height: 1;    text-align: center;    font-weight: bold;}.dd-item>button:before {    content: '+';    display: block;    position: absolute;    width: 100%;    text-align: center;    text-indent: 0;}.dd-item>button[data-action="collapse"]:before {    content: '-';}.dd-placeholder, .dd-empty {    margin: 5px 0;    padding: 0;    min-height: 30px;    background: #f5f5f5;    border: 1px dashed #b6bcbf;    box-sizing: border-box;    -moz-box-sizing: border-box;}.dd-empty {    border: 1px dashed #bbb;    min-height: 100px;    background-color: #e5e5e5;    background-size: 60px 60px;    background-position: 0 0, 30px 30px;}.dd-dragel {    position: absolute;    pointer-events: none;    z-index: 9999;}.dd-dragel>.dd-item .dd-handle {    margin-top: 0;}.dd-dragel .dd-handle {    -webkit-box-shadow: 2px 4px 6px 0 rgba(0, 0, 0, .1);    box-shadow: 2px 4px 6px 0 rgba(0, 0, 0, .1);}.dd3-content {    display: block;    height: auto;    margin: 5px 0;    padding: 8px 16px 8px 40px;    color: #979898;    text-decoration: none;    font-weight: bold;    border: 1px solid #e5e5e5;    background: #fafafa;    box-sizing: border-box;    -moz-box-sizing: border-box;}.dd3-content:hover {    color: #317eeb;    background: #fff;}.dd-dragel>.dd3-item>.dd3-content {    margin: 0;}.dd3-item>button {    margin-left: 30px;}.dd3-handle {    position: absolute;    margin: 0;    left: 0;    top: 0;    cursor: pointer;    width: 30px;    text-indent: 100%;    white-space: nowrap;    overflow: hidden;    border: 1px solid #ccc;    background: #d5d5d5;    border-top-right-radius: 0;    border-bottom-right-radius: 0;}.dd3-handle:before {    content: "\f0c9";    font-family: FontAwesome;    display: block;    position: absolute;    left: 0;    top: 8px;    width: 100%;    text-align: center;    text-indent: 0;    color: #fff;    font-size: 14px;    font-weight: normal;}.dd3-handle:hover {    background: #404040;    border: 1px solid #404040;}