.post91-flex {
  display: flex;
  gap: 1rem;
}

.post91-a-color a {
  color: blue;
  text-decoration: underline blue;
}

.post91-a-color a:hover {
  color: red;
  text-decoration: underline red;
}

.post91-img-size img {
  width: 100%;
}

@media screen and (max-width: 768px) {
  .post91-flex {
    display: inline;
  }
}