.treeview, .treeview * {
    user-select: none;
    margin: 0px;
    padding: 0px;
    box-sizing: border-box;
    font-size: 20px;
}


    .treeview p {
        padding-left: 20px;
        margin-top: 5px;
    }


    .treeview .item {
        cursor: pointer;
        display: inline-block;
        padding: 4px;
        width: calc(100% - 30px)
    }

        .treeview .item:hover {
            background: #DDD;
        }

    .treeview .group [fold-button] {
        display: inline-block;
        padding: 5px;
        width: 30px;
        text-align: center;
        border-radius: 3px;
        cursor: pointer;
        background-color: #7cc5f3;
    }

        .treeview .group [fold-button]:hover {
            background: #3f6ad8;
        }

    .treeview .item i {
        margin-right: 10px;
    }

    .treeview .item[check-value="2"] {
        color: #3f6ad8;
    }

    .treeview .item[check-value="1"] {
        color: #3f6ad8;
    }

    .treeview .item[check-value="0"] {
        color: #333;
    }