body {
  background-color: #333;
  color: #ddd;
  margin: 2em 2em 0;
}

h1 {
  color: #6cf;
  font-size: 1.5em;
}

#inputs {
  margin-top: 2em;
}

h2 {
  margin-top: 2em;
  color: #6cf;
  font-size: 1.25em;
}

a {
  color: #3cf;
}

input {
  background-color: #444;
  border: 1px solid #eee;
  color: #fff;
  font-size: 0.95em;
  margin-right: 0.6em;
  padding: 0.2em;
}

button {
  border: 1px solid #eee;
  background-color: #38f;
  color: #000;
  margin-right: 0.6em;
  font-size: 0.95em;
  padding: 0.2em;
}

#result {
  display: none;
}

#bmi, #category {
  font-weight: bold;
}

.bmi-underweight {
  color: #38f;
}

.bmi-normal {
  color: #3f3;
}

.bmi-overweight {
  color: #ff3;
}

.bmi-obese-class-i {
  color: #fa3;
}

.bmi-obese-class-ii {
  color: #f63;
}

.bmi-obese-class-iii {
  color: #f33;
}

div {
  margin-bottom: 1em;
}

#unit-selector label {
  display: block;
  margin-bottom: 0.25em;
}

@media (max-width: 800px) {
  button, input[type="text"] {
    display: block;
    margin-bottom: 1em;
  }
}

#article {
  padding: 5% 40% 0 0;
}