* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.4;
  color: #111;
  background: white;
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 16px;
}

h1, h2 {
  margin: 0 0 12px 0;
}

label {
  display: inline-block;
  margin: 12px 8px 6px 0;
  font-weight: 600;
}

input {
  padding: 8px 10px;
  border: 1px solid #333;
  min-width: 220px;
}

button {
  padding: 8px 12px;
  border: 1px solid #333;
  background: #f2f2f2;
  cursor: pointer;
}

button:hover {
  background: #e6e6e6;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
}

thead th {
  text-align: left;
  border-bottom: 2px solid #333;
  padding: 10px 8px;
}

tbody td {
  border-bottom: 1px solid white;
  padding: 10px 8px;
}

tbody tr:nth-child(even) {
  background: white;
}