shiziyu18/static/js/dist/jquery/nestable/nestable.css

/**
 * Nestable
 */

.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; 
    margin: 5px 0; 
    padding: 5px 10px; 
    text-decoration: none; 
    border: 1px solid #ebebeb;
    background: #fff;
    -webkit-border-radius: 3px;
            border-radius: 3px;
}
.dd-handle:hover {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: #f2fbff; border: 1px dashed #b6bcbf; box-sizing: border-box; -moz-box-sizing: border-box; }
.dd-empty { border: 1px dashed #bbb; min-height: 100px; background-color: #e5e5e593;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);
}

/**
 * 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; }

@media only screen and (min-width: 700px) { 

    .dd + .dd { margin-left: 2%; }

}

.dd-hover > .dd-handle { background: #2ea8e5 !important; }

/**
 * Nestable Draggable Handles
 */

.dd3-content { display: block;margin: 5px 0;
    padding: 5px 10px 5px 40px; 
    text-decoration: none;
    border: 1px solid #ebebeb;
    background: #fff;
    -webkit-border-radius: 3px;
            border-radius: 3px;
}
.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 #ebebeb;
    background: #fff;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}
.dd3-handle:before { content: '≡'; display: block; position: absolute; left: 0; top: 5px; width: 100%; text-align: center; text-indent: 0; color: #ccc; font-size: 20px; font-weight: normal; }
.dd3-handle:hover { background: #f7f7f7; }