/*：源代码唯一下载链接: http://www.bootstrapmb.com/item/416(当前备注仅在演示里出现，下载源码不包含)*//** * Nestable */.dd {    position: relative;    display: block;    margin: 0;    padding: 0;    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: 32px;    margin: 5px 0;    padding: 5px 10px;    color: #333;    text-decoration: none;    font-weight: bold;    border: 1px solid #ccc;    background: #fafafa;    -moz-box-sizing: border-box;    -webkit-box-sizing: border-box;    box-sizing: border-box;    line-height: 22px;}    .dd-handle:hover {        color: #2ea8e5;        background: #fff;    }.dd-item >button {    display: block;    position: relative;    cursor: pointer;    float: left;    width: 25px;    height: 20px;    margin: 6px 0;    padding: 0;    text-indent: 100%;    white-space: nowrap;    overflow: hidden;    border: 0;    background: transparent;    font-size: 18px;    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: #f2fbff;    border: 1px dashed #b6bcbf;    -moz-box-sizing: border-box;    -webkit-box-sizing: border-box;    box-sizing: border-box;}.dd-empty {    border: 1px dashed #bbb;    min-height: 100px;    background-color: #e5e5e5;    background-image: -webkit-linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff), -webkit-linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff);    background-image: -moz-linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff), -moz-linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff);    background-image: linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff), linear-gradient(45deg, #fff 25%, transparent 25%, transparent 75%, #fff 75%, #fff);    -ms-background-size: 60px 60px;    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);        -ms-box-shadow: 2px 4px 6px 0 rgba(0,0,0,.1);        box-shadow: 2px 4px 6px 0 rgba(0,0,0,.1);    }/** * Nestable Extras */.nestable-lists {    display: block;    clear: both;    padding: 30px 0;    width: 100%;    border: 0;    border-top: 2px solid #ddd;    border-bottom: 2px solid #ddd;}#nestable-menu {    padding: 0;    margin: 20px 0;}.nestable-dark-theme .dd-handle {    color: #fff;    border: 1px solid #999;    background: #bbb;}    .nestable-dark-theme .dd-handle:hover {        background: #bbb;    }.nestable-dark-theme .dd-item >button:before {    color: #fff;}@media only screen and (min-width: 700px) {    .dd {        float: left;        width: 100%;    }        .dd + .dd {            margin-left: 2%;        }}.dd-hover >.dd-handle {    background: #2ea8e5 !important;}/** * Nestable Draggable Handles */.dd3-content {    display: block;    margin: 7px;    padding: 5px 10px 5px 40px;    color: #333;    text-decoration: none;    font-weight: bold;    border: 1px solid #ccc;    background: #f0f0f0;    -webkit-box-sizing: border-box;    -moz-box-sizing: border-box;    box-sizing: border-box;    cursor: default;}    .dd3-content:hover {        color: #2ea8e5;    }.dd-dragel >.dd3-item >.dd3-content {    margin: 0;}.dd3-item >button {    margin-left: 36px;}.dd3-handle {    position: absolute;    margin: 0;    left: 0;    top: 0;    cursor: move;    width: 36px;    text-indent: 100%;    white-space: nowrap;    overflow: hidden;    border: 1px solid #aaa;    background: #aaa;}    .dd3-handle:before {        content: '≡';        display: block;        position: absolute;        left: 0;        top: 3px;        width: 100%;        text-align: center;        text-indent: 0;        color: #fff;        font-size: 20px;        font-weight: normal;    }    .dd3-handle:hover {        background: #aaa;    }/*：源代码唯一下载链接: http://www.bootstrapmb.com/item/416(当前备注仅在演示里出现，下载源码不包含)*/