#ultra-app{
max-width:900px;
margin:auto;
font-family:Arial;
}

.fila{
border:1px solid #ccc;
padding:10px;
margin:10px 0;
}

.item{
cursor:pointer;
padding:5px;
background:#fafafa;
}

.item:hover{
background:#e3f2fd;
}