html, body {
    width: 100%;
    height: 100%;
    padding: 0;
    margin: 0;
    font-family: Roboto;
}

* {
    box-sizing: border-box;
}

#DropDownListContainer {
    background-color: #d6f5d6;
    border-bottom: solid 3px #04AA6D;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    font-size: 0;
    height: 50px;
    display: flex;
}

#JSONTreeContainer {
    background-color: gainsboro;
    border-right: solid 1px #04AA6D;
    position: fixed;
    top: 50px;
    left: 0;
    /* bottom: 0; */
    width: 317px;
    height: 600px;
    z-index: -1;
}