tutorial/miller.css
::-webkit-scrollbar {
    background: rgba(0, 0, 0, 0);
    width: 6px;
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.3);
    height: 30px;
    border-radius: 2px;
}

* [class^=miller] {
    box-sizing: border-box;
    padding: 0;
    margin: 0;
}

.miller-cols-container-wrapper {
    max-width: 75%;
    margin: auto;
    position: relative;
    z-index: 1;
    background-color: #fff;
}

.miller-cols-body {
    display: flex;
    display: -ms-flexbox;
    display: -webkit-box;
    overflow: hidden;
    height: 100%;
    min-height: 300px;
    position: relative;
    z-index: 1;
    margin: 0 auto;
    border-left: 1px solid #DBDBDB;
}

.miller-col-container,
.miller-col-loading-container {
    border: 1px solid #DBDBDB;
    border-left: 0;
    display: -ms-flexbox;
    display: -webkit-box;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    -webkit-box-flex: 1;
    -ms-flex: 1;
    flex: 1;
    position: relative;
    padding: 0;
    overflow-wrap: break-word;
}

.miller-col-list-item.selected {
    background: #eaeaea;
    color: rgba(0, 0, 0, 0.9);
}

.miller-col-loading-container .miller-col-body {
    width: 100%;
    height: 100%;
}

.miller-col-body {
   -webkit-overflow-scrolling: touch;
    margin-top: 48px;
    padding-top: 0;
    overflow-y: auto;
}

.miller-col-loading-container.col-loading .loading-icon-container {
    position: absolute;
    top: 10%;
    left: 45%;
    height: 5rem;
    width: 5rem;
    transform: translate(-50%, -50%);
    background-size: contain;
}

.miller-col-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}

.miller-col-nav .material-icons {
    font-size: 3em;
    font-weight: 300;
    float: right;
}

.miller-col-nav:hover > * {
    cursor: pointer;
    color: #777;
}

.miller-col-nav.nav-prev {
    left: 0;
    transform: translateX(-100%);
}

.miller-col-nav.nav-next {
    right: 0;
    transform: translateX(100%);
}

.miller-col-loading-container.hidden,
.miller-col-container.hidden {
    display: none;
}

.miller-col-nav.hidden {
    visibility: hidden;
    opacity: 0;
}

.miller-col-title {
    border-bottom: 1px solid #DBDBDB;
    text-align: center;
    padding: 10px;
    font-weight: 900;
    -webkit-box-shadow: 0px 5px 4px rgba(0, 0, 0, 0.05);
       -moz-box-shadow: 0px 5px 4px rgba(0, 0, 0, 0.05);
            box-shadow: 0px 5px 4px rgba(0, 0, 0, 0.05);
    position: absolute;
    z-index: 10;
    height: 48px;
    background: #fff;
    width: 100%;
}

.miller-col-title .material-icons.action-add{
    position: absolute;
    top: 50%;
    transform: translateX(-100%) translateY(-50%);
}

.miller-col-title .material-icons.action-add:hover{
    font-weight: bold;
    color: gray;
}

.miller-col-title-text {
    text-transform: uppercase;
    font-size: 90%;
    font-weight: 700;
    letter-spacing: 1px;
}

.miller-col-actions {
    float: right;
}

.miller-col-actions .material-icons {
    cursor: pointer;
}

.miller-col-container,
.miller-col-loading-container {
    min-width: 210px;
    max-width: 400px;
}

.miller-col-list-item {
    padding: 10px;
    font-weight: 300;
    display: table;
    width: 100%;
    color: rgba(0, 0, 0, 0.75);
    position: relative;
    text-align: left;
    word-break: break-all;
    min-height: 44px;
}

.miller-col-list-item .num-children-badge{
    border-radius: 50%;
    padding: 5px;
    border: 1px solid #ddd;
    color: #666;
    text-align: center;
    position: absolute;
    right: 35px;
    top: 50%;
    transform: translateY(-50%);        
}

.miller-col-list-item > * {
    vertical-align: middle;
}

.miller-col-list-item .list-item-text .list-item-icon {
    float: left;
    padding-top: 4px;
    padding-bottom: 4px;
}

.list-item-icon{
    margin-right: 10px;
}

.miller-col-list-item .has-children {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    right: 15px;
}

.miller-col-list-item .list-item-actions {
    position: absolute;
    right: 12px;
    display: none;
}

.miller-col-list-item[data-has-children="true"] .list-item-actions {
     right: 40px;
 }

.miller-col-list-item:hover .list-item-actions {
    display: inline;
}

.miller-col-list-item:hover .material-icons,
.miller-col-list-item.selected .material-icons {
    color: #777;
}

.list-item-actions .material-icons {
    padding-left: 8px;
    opacity: 0.6;
}

.list-item-actions .material-icons:hover {
    opacity: 1;
}

.miller-col-list-item:hover {
    background: rgba(0, 0, 0, 0.05);
    cursor: pointer;
}

.text-node {
    white-space: nowrap;
}


/*
    Spinner style.
*/

.spinner {
    min-width: 24px;
    min-height: 24px;
}

.spinner:before {
    content: 'Loading…';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin-top: -10px;
    margin-left: -10px;
}

.spinner:not(:required):before {
    content: '';
    border-radius: 50%;
    border: 2px solid rgba(0, 0, 0, .3);
    border-top-color: rgba(0, 0, 0, .6);
    animation: spinner .6s linear infinite;
    -webkit-animation: spinner .6s linear infinite;
}

@keyframes spinner {
    to {
        transform: rotate(360deg);
    }
}

@-webkit-keyframes spinner {
    to {
        -webkit-transform: rotate(360deg);
    }
}

/* hide badge icon when user hovers on list item being on editable mode */

.miller-cols-container-wrapper[data-is-read-only="false"] .miller-col-list-item:hover .num-children-badge{
    display: none;
}

