chamilo-lms2/plugin/customcertificate/resources/css/form.css

.form-control-cert {
    background-color: #fff;
    background-image: none;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-shadow: inset 0 1px 1px rgba(0,0,0,.075);
    color: #555;
    font-size: 14px;
    line-height: 1.42857143;
    padding: 6px 12px;
    transition: border-color ease-in-out .15s,box-shadow ease-in-out .15s;
}
.certificado-text-label {
    font-weight: 700;
    margin: 0 10px 0 10px;
}
input:disabled { background: #eee; }
label { font-size: 13px; }