body {
    background-color: lemonchiffon;
    margin: 20px;
}

button {
    background-color: mediumseagreen;
    border: none;
    color: white;
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
}

p {
    color: red;
}

.hidden {
    display: none;
}

#textbox {
    margin: 30px;
    font-size: 24px;
}

#menu {
    margin: 30px;
}

.container {
    margin: 30px;

    border-style: inset;
}