.obbligatorio {
    background-color: #FFFFCC;
}
.opzionale {
    background-color: #FFFFCC;
}
.separatore {
    background-color: #F0E68C;
}
img {
    border: none;
}

div.popup {
  position: absolute;
  top: 1000px;
  left: 55px;
  width: 400px;
  height: 180px;
  border: 1px solid #ff0000;
  padding: 10px;
  font-family: Verdana, Arial, Helvetica, sans-serif;
  font-size: 10pt;
  background-color: #ffffff;
}

#errors {
  border: 1px solid red;
  margin: 10px auto;
  width: 50%;
  text-align: left;
  padding: 10px;
}

#errors h3 {
  text-align: center;
}

.box-testi-form {
  margin: 10px auto;
  width: 50%;
  text-align: left;
  padding: 10px;
}

.box-form-bottoni {
  margin: 10px auto;
  width: 50%;
  text-align: center;
  padding: 10px;
}

.tabella-form {
  border: medium solid; 
  border-collapse: collapse; 
  width: 60%;
  margin: 10px auto;
}
.tabella-form td {
  border: 1px solid;
}