.kg-form_entityList {
    margin: 20px;
    width: 370px;
    position: absolute;
    left: 50%;
    margin-left: -195px;
    background: white;
}

.kg-form_entityList-parent {
    background: rgba(255, 255, 255, 0.9);
    position: absolute;
    top: 60px;
    left: 0;
    bottom: 0;
    right: 0;
    z-index: 100;
}