#container {
    background-color: coral;
    min-height: 900px;
    width: 90%;
    padding: 1em;
    margin: 5px;
    font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
}

#submit {
    margin: 10px;
}

.topic-button {
    height: 50px;
    width: 120px;
    background-color: cadetblue;
    color: white;
    border: 0;
    margin: 30px;
}