body {
    font-family: sans-serif;
    background-color: white;
    font-size: 20px;
}


header {
    font-size: 12px;
    text-align: right;
}


hr#linha {
    border: 0;
    border-top: 1px solid #ccc;
}

div#corpo {
    margin: auto;
    padding: 20px;
    background-color: white;
    box-shadow: 0px 0px 30px #777;
}

div#opcoes {
    font-size: 19px;
    text-align: left;
}

div#fonte {
    font-size: 25px;
}

ul {
    font-size: 21px;
    font-family: 'Times New Roman', Times, serif;
}

footer {
    text-align: center;
    font-family: Tahoma;
    font-size: 15px;
}


p {
    -webkit-margin-before: 0.5em;
    -webkit-margin-after: 0.5em;
    text-align: justify;
}


a:link {
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}