.message {
  position: relative;
  margin-block: 30px 16px;
  padding: 10px 20px;
  line-height: 1.2;
  border-radius: 16px;
  background: #fff;
  text-align: left;
  z-index: 1;
}
.message::after {
  content: "";
  position: absolute;
  display: block;
  top: -18px;
  left: 50%;
  width: 50px;
  height: 50px;
  background: #fff;
  rotate: 45deg;
  translate: -50% 0;
  z-index: -1;
}
@media (max-width: 420px) {
  .message {
    margin-block: 24px 10px;
    padding: 6px 14px;
    font-size: 21px;
  }
  .message::after {
    top: -16px;
    width: 40px;
    height: 40px;
 
  }
}
