html, body {
    height: 100%;
    margin: 0px;
    //overflow: hidden;
    padding: 0px;
    width: 100%;
}

#mainMenuPanel {
    z-index: 1;
}

.bigPanel {
    background-color: lightgray;
    border: 3px solid black;
    z-index: 2;
}

.okZone {
    border: 1px green solid;
    color: green;
}

.errorZone {
    border: 1px red solid;
    color: red;
}

.functionsContainer {
    border: 1px black solid;
    display: flex;
    flex-direction: column;
    margin: 5px;
}

.clickable {
    cursor: pointer;
}

.hidden {
    display: none;
}