body {
    font-family: Verdana, sans-serif;
}

.container {
    background-color: lightgray;

    border: 1px solid black;
    border-radius: 10px;

    padding: 10px;

    margin-right: 10%;
    margin-left: 10%;
}

.navigation {
    text-align: center;
}

.navigation a {
    text-decoration: none;
    color: inherit;
    
    padding-left: 10px;
    padding-right: 10px;
}

.navigation a:visited {
    color: inherit;
}

@media only screen and (max-width: 600px) {
    .navigation a {
        display: block;
    }
}

.chatbox {
    border: 1px solid black;
    border-radius: 10px;

    font-style: italic;

    background-color: white;

    min-height: 100px;

    padding-left: 15px;

    margin-bottom: 15px;
}

.flex-container {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
}

.flex-input {
    flex-grow: 4;
}

.flex-button {
    flex-grow: 2;
}

.header {
    text-align: center;
}

.separator {
    margin-top: 30px;
}

.footer {
    padding-top: 15px;
    padding-bottom: 15px;
    text-align: center;
}