.class_lista{
 width: 206px;
 border: 1px solid #eaeaea;
 z-index: 9;
 background: #f3f3f3;
 list-style: none;
 margin-left: 5px;
 margin-top: -3px;
 cursor: pointer;
 padding: 3px;
}

.class_lista li {
 padding: 2px;
 margin-bottom: 4px;
}

.class_lista li:hover {
 background: #eaeaea;
}