* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
.middle {
  /*   */
  margin-left: 50%;
  transform: translateX(-50%);
}

.container {
  margin-top: 5rem;
}

.top-bar {
  background: rgb(184, 181, 181);
  color: #fff;
  padding: 1rem;
}

.btn {
  background: coral;
  color: #fff;
  border: none;
  outline: none;
  cursor: pointer;
  padding: 0.7rem 2rem;
}

.btn:hover {
  opacity: 0.9;
}

.page-info {
  margin-left: 1rem;
}

.error {
  background: orangered;
  color: #fff;
  padding: 1rem;
}