/* Avatar - applies everywhere */
.avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  overflow: hidden;
  margin-right: 1rem;
  display: block;
  flex-shrink: 0;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Responsive tweaks */
@media (max-width: 600px) {
  .profile-header {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .profile-header .avatar {
    margin-right: 0;
    margin-bottom: 0.5rem;
  }

  #nav ul {
    flex-direction: column;
    align-items: center;
  }

  #nav a {
    width: 90%;
    text-align: center;
  }
}