fieldset {
    background: none repeat scroll 0 0 #fff;
    border: 2px solid #aaa;
    border-radius: 15px;
    margin: 0 0 30px;
    padding: 0 20px 20px;
}
div #articuloPDF {
    background-color: #fff;
    border: 0 none;
    width: 300px;
}
div #articuloPDF:focus {
    background-color: #fff;
    border: 0 none;
    width: 300px;
}
legend {
    background: none repeat scroll 0 0 #eee;
    border: 2px solid #aaa;
    border-radius: 5px;
    color: #164a20;
    display: block;
    font-family: calibri,Arial,Helvetica,sans-serif;
    font-size: 20px;
    font-weight: bold;
    margin: 0;
    padding: 5px;
    text-align: left;
    text-shadow: 1px 1px 1px #cccccc;
    width: 11em;
}
button.submit {
    background-color: #fff;
    background-image: -moz-linear-gradient(0% 100% 90deg, #bbbbbb, #ffffff);
    border: 1px solid #f1f1f1;
    border-radius: 10px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    color: #444;
    font-family: Helvetica,calibri,Arial,sans-serif;
    font-weight: bold;
    line-height: 1;
    padding: 9px 17px;
    text-shadow: 0 1px 1px rgba(255, 255, 255, 0.85);
}
button.submit:hover {
    color: #fff;
    cursor: pointer;
    opacity: 0.55;
}
button.submit:active {
    border: 1px solid #222;
    box-shadow: 0 0 10px 5px #444 inset;
}