.mi-clase{
  background: #ff0000;
}

.form-item label {
  display: inline;
  float: left;
  width: 20%;
}

.form-item select {
  width: 320px;
}

.odd th, .odd td {
   background: #eee;
   border: 0px;
}

.form-item textarea {
  width: 450px;
  height: 50px;
  border: 1px solid #cccccc;
  padding: 5px;
  font-family: Tahoma, sans-serif;
}