.treeSelect-panel {
    position: absolute;
    overflow: auto;
    border: 1px solid #DCDCDC;
    width: 100%;
    display: none;
    border-top-width: 0;
    z-index: 101;
    background: white;
    max-height: 200px;
}

.treeSelect-input {
    width: 100%;
    padding: 5px;
}

.treeSelect-mask {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    background-color: #FFF;
    opacity: .1;
    z-index: 99;
}