body {
    background-color: #f5f5f5;
    color: #333;
}

h1 {
    font-size: 2em;
    font-weight: normal;
    margin: 0.67em 0;
    color: black;
    font-weight: bold;
}

h2 {
    font-size: 1.5em;
    font-weight: normal;
    color: black;
    font-weight: inherit;
}

#set-mode {
    border: 2px solid #ccc;
    text-align: center;
    padding: 10px;
    background-color: #f3f4f5;
    color: #456;
}

#set-mode a {
    margin: 0.5em;
    padding: 0.5em;
    border: 2px solid #ccc;
    text-decoration: none;
    color: black;
    background-color: white;
    font-weight: bold;
    position: relative;
    display: inline-block;
}

#set-mode a:hover {
    background-color: #ccc;
    color: white;
}