body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #fff8e1;
  color: #333;
  padding: 30px;
  text-align: center;
  zoom: 150%;
}

h1 {
  color: #d84315;
  margin-bottom: 0.5em;
}

li {
  list-style: none;;
}

form, table, .race {
  margin: 20px auto;
}

fieldset {
  display: inline-block;
  text-align: left;
  padding: 10px 20px;
  border: 1px solid #ccc;
  border-radius: 8px;
}

label {
  size: 30px;
}

.double {
  display: block;
  margin-top: 10px;
}

button {
  background-color: #43a047;
  color: white;
  border: none;
  padding: 10px 20px;
  margin-top: 15px;
  font-size: 1em;
  border-radius: 8px;
  cursor: pointer;
}

button:hover {
  background-color: #388e3c;
}

.error {
  color: #c62828;
  font-weight: bold;
}

.result {
  font-size: 1.2em;
  margin: 10px 0;
}

pre.race {
  background: #f5f5f5;
  padding: 10px;
  display: inline-block;
  text-align: left;
  font-family: monospace;
}

table {
  border-collapse: collapse;
  width: 90%;
  max-width: 800px;
}

table, th, td {
  border: 1px solid #bbb;
}

th, td {
  padding: 8px;
}

a {
  color: #039be5;
  text-decoration: none;
  font-weight: bold;
}