.inbox-icon {
  position: relative;
  display: inline-block;
  font-size: 20px; /* taille de l'enveloppe */
  cursor: pointer;
  color: #333;
}

.inbox-icon .fa-envelope {
  font-size: 22px;
}

.badge-counter {
  position: absolute;
  top: -4px;
  left: 10px;
  background-color: red;
  color: white;
  font-size: 12px;
  font-weight: bold;
  border-radius: 50%;
  padding: 2px 6px;
  min-width: 18px;
  text-align: center;
  line-height: 1;
}