body {
  padding: 0;
  margin: 0;
  font-family: "HelveticaNeueLight", "HelveticaNeue-Light", "Helvetica Neue Light", "HelveticaNeue", "Helvetica Neue", "Helvetica", "Arial", sans-serif;
  font-weight: 300;
  background: #f7f7f7;
  color: #333;
}

section, footer {
  margin: 1.5em;
}

footer {
  margin-top: 3em;
}

h1, h2, h3 {
  margin: 0;
  text-rendering: optimizeLegibility;
}
h1 {
  font-weight: 400;
  font-size: 1.5em;
  color: #fff;
  text-shadow: 1px 1px 1px #000;
  background-color: rgba(0, 0, 0, .7);
  padding: 0.5em 1em;
}
h2 {
  font-weight: 300;
  margin: 1em 0;
}
h2 i:first-child {
  margin-left: 1em;
}

button {
  color: #fff;
  background: rgb(65, 185, 220);
  border-radius: 6px;
  text-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
  font-size: 1.2em;
  padding: .5em 1em;
}

input[type=text] {
  border-radius: 6px;
  font-size: 1.2em;
  padding: .5em;
  box-shadow: inset 0 0 5px #666;
  width: 300px;
  margin-bottom: 0.5em;
}
.radio {
  padding-bottom: 0.5em;
}
.output_log {
  margin-left: 1em;
  font-family: monospace;
  font-size: 1.5em;
  color: #999;
}

.output-result {
  margin-top: 0.5em;
  padding:0.5em;
}
@media (max-width: 768px) {
  .output-result {
    font-size: 2.2em;
  }
}
@media (min-width: 769px) {
  .output-result {
    font-size: 1.6em;
  }
}