.classroom-welcome {
  max-width: 920px;
  margin: 1rem auto 0;
  padding: 0.85rem 1rem;
  border: 1px solid #e4d08b;
  border-radius: 16px;
  background: linear-gradient(135deg, #fffdf4, #fff2c8);
  color: #765315;
  font-weight: 900;
  line-height: 1.45;
  text-align: center;
  box-shadow: 0 8px 22px #7c5a1310;
}

@media (max-width: 720px) {
  .classroom-welcome {
    margin: 0.7rem 0.75rem 0;
    font-size: 0.9rem;
  }
}