img {
  border: none;
  vertical-align: bottom;
}

a:hover img {
  border: none;
  background-color: transparent;
}

a:hover {
  text-decoration: none;
  color: black;
}

.center {
  text-align: center;
}

P.alert {
  font-size: 16px;
  color: red;
}

.code {
  font-size: 12px;
  font-family: "Courier";
}