fieldset {
    border: none;
}

fieldset strong {
    font: bold 18px 'Trebuchet MS', Verdana, Arial, Tahoma, sans-serif;
}

fieldset strong, fieldset #enviar {
    margin: 0 0 0 8px;
}

label {
    display: block;
    padding: 8px;
}

input, textarea {
    font: 16px Calibri, Verdana, Tahoma, sans-serif;
}