html, body {
  font-family: Verdana, sans-serif;
  text-align: center;
}

body {
  color: rgb(51, 51, 51);
  margin: 20px auto;
  max-width: 400px;
  padding: 10px;
}

img {
  height: auto;
  max-width: 100%;
}

h1 {
  font-size: large;
  font-weight: bold;
  line-height: 1.1;
  margin-top: 30px;
}

p {
  font-size: 70%;
}

.error {
  color: #b12a1f;
  background: #fff0f0;
  border: solid 1px #e74c3c;
  padding: 5px;
  font-size: 80%;
}