.container{
    border: solid 1px rebeccapurple;
}
.nav.navbar{
    background-color: red;
}
.flechita {
  display: inline-block;
  margin-top: 20px;
  text-decoration: none;
  color: #333;
  background-color: #e0e0e0;
  padding: 8px 14px;
  border-radius: 6px;
  transition: background-color 0.3s ease;
  font-weight: 500;
}

.flechita:hover {
  background-color: #bbb;
  color: #000;
}