body {
  padding: 0;
  margin: 0;
  background-color: darkgrey;
}
#content {
  margin: 20px;
  padding: 20px;
}

.navbar {
  background-color: black;
  display: inline-block;
  width: 100%;
}

.navbar a {
  background-color: black;
  float: left;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

.navbar a:hover {
  background-color: #ddd;
  color: black;
}

.messages .success {
  background-color: rgba(22, 216, 22, 0.479);
}

.messages .error {
  background-color: rgba(241, 45, 45, 0.212);
}