#body {
    overflow: hidden;
    margin: 0;
    padding: 0;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
}

#notification {
    position: absolute;
    text-align: center;
    bottom: 20px;
    right: 20px;
    width: 20%;
    height: 30%;
    display: none;
    background-color: white;
    color: #333;
    border-radius: 25px;
    border: 2px solid black;
    font-size: 1.5em;
    overflow-y: auto;
}

#notification-text {
    margin: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

#flow-diagram {
    position: absolute;
    border-left: 2px solid black;
    margin-left: 33%;
    width: 67%;
    height: 100%;
    background-color: #f0f0f0;
}

#sidebar {
    position: absolute;
    margin: 0;
    width: 33%;
    height: 100%;
    padding: 0;
    background-color: #ffffff;
    overflow-y: auto;
}

.sidebar-submenu, .sidebar-submenu-expand {
    border: 2px solid black;
    background-color: #f0f0f0;
    color: #333333;
    border-radius: 25px;
    padding: 10px;
    display: block;
    overflow: hidden;
    text-align: center;
    line-height: 2;
}

.sidebar-submenu-expand {
    display: none;
}

.sidebar-submenu-expand-button, .sidebar-submit, .sidebar-button {
    background-color: #777;
    display: block;
    margin: 6px 0;
    padding: 20px;
    color: white;
    cursor: pointer;
    border-radius: 25px;
    width: 100%;
    border: none;
    text-align: center;
    outline: none;
    font-size: 15px;
}

.sidebar-submenu-expand-button-active, .sidebar-submenu-expand-button:hover {
    background-color: #555;
}

.center {
    text-align: center;
}

.sidebar-submit {
    background-color: #ffaa00;
}

.sidebar-submit:hover {
    background-color: #ffdd00
}

.sidebar-button:hover {
    background-color: #555;
}

textarea {
    width: 90%;
    height: 200px;
    resize: vertical;
}