body {
  display: flex;
  justify-content: center;
}

p {
  margin-block-start: 0;
}

input, button {
  margin-top: 15px;
}

span {
  display: inline;
}

.instructions {
  width: 800px;
  display: flex;
  align-items: center;
  flex-direction: column;
}

.error {
  color: red;
  font-weight: 600;
}

.hidden {
  visibility: hidden;
}